✦ Urza's 99
← Back
Ertha Jo, Frontier Mentor

Ertha Jo, Frontier Mentor

{2}{R}{W}

Legendary Creature — Kor Advisor

When Ertha Jo enters, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.

2 / 4

Set
The List (PLST #OTJ-203)
Rarity
Uncommon
Mana value
4
Released
2026-10-19
Artist
Michal Ivan
EDHREC rank
#8,383
Colour identity
{R}{W}
Finishes
Nonfoil
Served from
Local database

Commander bracket

3 +
Bracket 3 and up — Upgraded
In 3 two-card combos

Derived from card traits, not a ruling — bracket rules turn on how a deck intends to use a card. Bracket rules

EDHREC

Salt Score 0.06
How much players resent seeing this card. The scale tops out around 3.1.
Can be your commander

Combos 74

The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Zealous Conscripts
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
4,276 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Restoration Angel
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
3,249 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Felidar Guardian
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
1,975 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Sparring Mummy
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
705 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Icewind Stalwart
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
232 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Aphetto Alchemist
{U}{R}{W}
Infinite mana artifacts you control can produceInfinite mana creatures you control can produceInfinite untap of artifacts you controlInfinite untap of creatures you control
125 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Hyrax Tower Scout
{R}{G}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
113 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Wispweaver Angel
{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
85 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Seeker of Skybreak
{R}{G}{W}
Infinite mana creatures you control can produceInfinite untap of creatures you control
37 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Liquimetal Torque
{R}{W}
Infinite triggers from the creature with a tap trigger
19 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Palladium Myr+Voltaic Key
{R}{W}
Infinite colorless manaInfinite mana artifact creatures you control can produceInfinite untap of artifact creatures you control
19 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Tidewater Minion
{U}{R}{W}
Infinite mana permanents you control can produceInfinite untap of permanents you control
15 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Little Bear
{R}{G}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
15 decks Commander Spellbook ↗
Transmutation Font+Clock of Omens+Ertha Jo, Frontier Mentor
{R}{W}
Infinite tapped Blood tokensInfinite tapped Clue tokensInfinite tapped Food tokens
9 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Liquimetal Coating
{R}{W}
Infinite triggers from the creature with a tap trigger
9 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Mycosynth Lattice
{R}{W}
Infinite triggers from the creature with a tap trigger
8 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Metalworker+Voltaic Key
{R}{W}
Infinite colorless manaInfinite mana artifact creatures you control can produceInfinite untap of artifact creatures you control
7 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Staff of Domination+Incubation Druid
{R}{G}{W}
Infinite card drawInfinite draw triggersInfinite lifegainInfinite lifegain triggersInfinite mana creatures you control can produceInfinite mana lands you control can produceInfinite untap of creatures you control
7 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Kenrith, the Returned King+Crystalline Crawler+Biomancer's Familiar
{W}{U}{B}{R}{G}
Infinite +1/+1 counters on creatures you controlInfinite card draw for any number of playersInfinite colored manaInfinite draw triggers for any number of opponentsInfinite lifegainInfinite lifegain triggersReturn all creature cards from all graveyards to the battlefield under your control
5 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Kenrith, the Returned King+Crystalline Crawler+Zirda, the Dawnwaker
{W}{U}{B}{R}{G}
Infinite +1/+1 counters on creatures you controlInfinite card draw for any number of playersInfinite colored manaInfinite draw triggers for any number of opponentsInfinite lifegainInfinite lifegain triggersReturn all creature cards from all graveyards to the battlefield under your control
5 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Kenrith, the Returned King+Crystalline Crawler+Training Grounds
{W}{U}{B}{R}{G}
Infinite +1/+1 counters on creatures you controlInfinite card draw for any number of playersInfinite colored manaInfinite draw triggers for any number of opponentsInfinite lifegainInfinite lifegain triggersReturn all creature cards from all graveyards to the battlefield under your control
4 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Kenrith, the Returned King+Crystalline Crawler+Agatha of the Vile Cauldron
{W}{U}{B}{R}{G}
Infinite +1/+1 counters on creatures you controlInfinite card draw for any number of playersInfinite colored manaInfinite draw triggers for any number of opponentsInfinite lifegainInfinite lifegain triggersReturn all creature cards from all graveyards to the battlefield under your control
4 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Liquimetal Coating
{R}{W}
Infinite lifegainInfinite lifegain triggers
2 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Mycosynth Lattice
{R}{W}
Infinite lifegainInfinite lifegain triggers
2 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Liquimetal Torque
{R}{W}
Infinite lifegainInfinite lifegain triggers
2 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Derevi, Empyrial Tactician
{R}{G}{W}{U}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
2 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Kragma Butcher+Mycosynth Lattice
{R}{W}
Infinitely powerful creature until end of turn
1 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Corridor Monitor
{U}{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
1 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Deceiver Exarch
{U}{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
1 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Kenrith, the Returned King+Crystalline Crawler+Heartstone
{W}{U}{B}{R}{G}
Infinite +1/+1 counters on creatures you controlInfinite card draw for any number of playersInfinite colored manaInfinite draw triggers for any number of opponentsInfinite lifegainInfinite lifegain triggersReturn all creature cards from all graveyards to the battlefield under your control
1 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Staff of Domination+Llanowar Tribe
{R}{G}{W}
Infinite card drawInfinite draw triggersInfinite green manaInfinite lifegainInfinite lifegain triggersInfinite mana creatures you control can produceInfinite untap of creatures you control
1 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Kragma Butcher+Liquimetal Coating
{R}{W}
Infinitely powerful creature until end of turn
1 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Kragma Butcher+Liquimetal Torque
{R}{W}
Infinitely powerful creature until end of turn
1 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Pestermite
{U}{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Memnarch
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Biotransference
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Kragma Butcher+Encroaching Mycosynth
{U}{R}{W}
Infinitely powerful creature until end of turn
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Sphinx's Disciple+Mycosynth Lattice
{U}{R}{W}
Infinite card drawInfinite draw triggers
0 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Bounding Krasis
{R}{G}{W}{U}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Liquimetal Torque
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Sphinx's Disciple+Biotransference
{W}{U}{B}{R}
Infinite card drawInfinite draw triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Memnarch
{U}{R}{W}
Infinite triggers from the creature with a tap trigger
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+King Macar, the Gold-Cursed+Encroaching Mycosynth
{W}{U}{B}{R}
Exile all creatures opponents controlNear-infinite artifact ETBNear-infinite artifact LTBNear-infinite artifact sacrifice triggersNear-infinite Gold tokens
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Mycosynth Lattice
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Staff of Domination+Elvish Aberration
{R}{G}{W}
Infinite card drawInfinite draw triggersInfinite green manaInfinite lifegainInfinite lifegain triggersInfinite mana creatures you control can produceInfinite untap of creatures you control
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Servant of Tymaret+Liquimetal Torque
{R}{W}{B}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Encroaching Mycosynth
{U}{R}{W}
Infinite triggers from the creature with a tap trigger
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Encroaching Mycosynth
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Breaching Hippocamp
{U}{R}{W}
Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite creature tokens with hasteInfinite death triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Servant of Tymaret+Mycosynth Lattice
{R}{W}{B}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗

Showing the 50 most played of 74.

Commander recommendations

Top synergy 50

Played far more in this commander's decks than elsewhere.

  1. Humble Defector 73 %+70.3 %
  2. Soulbright Flamekin 65 %+64.4 %
  3. Brash Taunter 61 %+56.2 %
  4. Yes Man, Personal Securitron 56 %+53.5 %
  5. Loran of the Third Path 63 %+50.6 %
  6. Jaxis, the Troublemaker 51 %+50.0 %
  7. The Jolly Balloon Man 55 %+48.7 %
  8. Angelic Sell-Sword 48 %+47.1 %
  9. Realmbreaker, the Invasion Tree 47 %+46.7 %
  10. Mishra's Bauble 47 %+45.3 %
  11. Intrepid Hero 44 %+43.1 %
  12. Captivating Crew 44 %+42.8 %
  13. Chandra, Dressed to Kill 42 %+41.8 %
  14. Form a Posse 42 %+41.5 %
  15. Spikeshot Goblin 41 %+40.7 %
  16. Zirda, the Dawnwaker 43 %+39.7 %
  17. Chaos Wand 39 %+39.0 %
  18. Orthion, Hero of Lavabrink 40 %+38.8 %
  19. Thousand-Year Elixir 42 %+38.5 %
  20. Hellspur Posse Boss 39 %+38.5 %
  21. Mother of Runes 47 %+35.2 %
  22. Marvin, Murderous Mimic 39 %+34.5 %
  23. Brimstone Roundup 34 %+34.0 %
  24. Bounty Agent 34 %+33.2 %
  25. Bounty Board 32 %+31.5 %
  26. Drumbellower 34 %+31.2 %
  27. Chandra, Bold Pyromancer 31 %+31.0 %
  28. Teyo, Geometric Tactician 31 %+30.9 %
  29. Slayers' Stronghold 51 %+30.9 %
  30. Spikeshot Elder 30 %+29.9 %
  31. Brigid, Hero of Kinsbaile 30 %+29.7 %
  32. Maze of Ith 32 %+29.6 %
  33. Strago and Relm 29 %+28.3 %
  34. Chandra, Fire of Kaladesh 28 %+27.8 %
  35. Magda, the Hoardmaster 29 %+27.3 %
  36. Auriok Bladewarden 27 %+27.1 %
  37. Furystoke Giant 27 %+27.0 %
  38. Magewright's Stone 28 %+25.9 %
  39. Giver of Runes 32 %+25.3 %
  40. Agrus Kos, Eternal Soldier 27 %+25.1 %
  41. Sunhome, Fortress of the Legion 40 %+24.8 %
  42. Elspeth Resplendent 25 %+24.8 %
  43. Kiki-Jiki, Mirror Breaker 28 %+24.6 %
  44. The Wandering Emperor 25 %+24.1 %
  45. The Eternal Wanderer 25 %+23.5 %
  46. Urza's Bauble 24 %+23.3 %
  47. Skrelv, Defector Mite 28 %+22.9 %
  48. The Warring Triad 23 %+22.7 %
  49. Taii Wakeen, Perfect Shot 24 %+22.5 %
  50. To Arms! 23 %+22.4 %

Most included 50

Highest share of decks running them, distinctive or not.

  1. Mountain 98 %+0.3 %
  2. Plains 98 %-0.5 %
  3. Command Tower 81 %-4.4 %
  4. Arcane Signet 78 %-1.7 %
  5. Humble Defector 73 %+70.3 %
  6. Sol Ring 73 %-11.6 %
  7. Clifftop Retreat 68 %+0.6 %
  8. Soulbright Flamekin 65 %+64.4 %
  9. Loran of the Third Path 63 %+50.6 %
  10. Brash Taunter 61 %+56.2 %
  11. Boros Signet 60 %+12.4 %
  12. Talisman of Conviction 59 %+8.3 %
  13. Battlefield Forge 59 %+1.1 %
  14. Yes Man, Personal Securitron 56 %+53.5 %
  15. The Jolly Balloon Man 55 %+48.7 %
  16. Swords to Plowshares 53 %-13.1 %
  17. Jaxis, the Troublemaker 51 %+50.0 %
  18. Slayers' Stronghold 51 %+30.9 %
  19. Rugged Prairie 50 %+4.8 %
  20. Path to Exile 48 %-9.3 %
  21. Angelic Sell-Sword 48 %+47.1 %
  22. Mother of Runes 47 %+35.2 %
  23. Realmbreaker, the Invasion Tree 47 %+46.7 %
  24. Boros Garrison 47 %+13.2 %
  25. Mishra's Bauble 47 %+45.3 %
  26. Captivating Crew 44 %+42.8 %
  27. Intrepid Hero 44 %+43.1 %
  28. Sacred Foundry 44 %-4.4 %
  29. Rogue's Passage 43 %+13.2 %
  30. Zirda, the Dawnwaker 43 %+39.7 %
  31. Form a Posse 42 %+41.5 %
  32. Chandra, Dressed to Kill 42 %+41.8 %
  33. Thousand-Year Elixir 42 %+38.5 %
  34. Spikeshot Goblin 41 %+40.7 %
  35. Sundown Pass 41 %+0.2 %
  36. Furycalm Snarl 41 %-3.6 %
  37. Sunhome, Fortress of the Legion 40 %+24.8 %
  38. Orthion, Hero of Lavabrink 40 %+38.8 %
  39. Spectator Seating 40 %+0.5 %
  40. Chaos Wand 39 %+39.0 %
  41. Marvin, Murderous Mimic 39 %+34.5 %
  42. Hellspur Posse Boss 39 %+38.5 %
  43. Temple of Triumph 36 %+0.5 %
  44. Blasphemous Act 36 %+2.2 %
  45. Brimstone Roundup 34 %+34.0 %
  46. Drumbellower 34 %+31.2 %
  47. Bounty Agent 34 %+33.2 %
  48. Boros Charm 34 %-12.9 %
  49. Maze of Ith 32 %+29.6 %
  50. Sunscorched Divide 32 %+9.8 %

Format legality

Standard Legal
Pioneer Legal
Modern Legal
Legacy Legal
Vintage Legal
Pauper Not legal
Commander Legal
Oathbreaker Legal
Duel Commander Legal
Brawl Legal
Standard Brawl Legal
Historic Legal
Timeless Legal
Alchemy Not legal
Penny Not legal
Premodern Not legal
PreDH Not legal
Pauper EDH Not legal
Old School Not legal
Future Legal
Gladiator Legal
All printingsScryfall ↗Edhrec ↗

Rulings

  • 2024-04-12

    Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities (such as equip) are activated abilities and will have colons in their reminder text.

  • 2024-04-12

    Any choices made when the ability resolves won't have been made yet when it's copied. Any such choices will be made separately when the copy resolves.

  • 2024-04-12

    If an ability is linked to a second ability, copies of that ability are also linked to that second ability. If the second ability refers to "the exiled card," it refers to all cards exiled by the ability and the copy. For example, if one of Helvault's activated abilities is copied and two cards are exiled, they both return when Helvault is put into a graveyard from the battlefield.

  • 2024-04-12

    If the ability divides damage or distributes counters among a number of targets, the division and number of targets can't be changed. If you choose new targets, you must choose the same number of targets.

  • 2024-04-12

    If the ability is modal (that is, if it says, "Choose one —" or similar), the mode is copied and can't be changed.

  • 2024-04-12

    If the activated ability's cost contains a choice, such as a creature to sacrifice or a number of counters to remove, the copy uses that same information. You can't pay the cost again, even if you want to.

  • 2024-04-12

    The copy made by Ertha Jo's triggered ability is created on the stack, so it's not "activated."

  • 2024-04-12

    The copy will have the same targets as the ability it's copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. The new targets must be legal.

  • 2024-04-12

    The source of the copy is the same as the source of the original ability.

An unhandled error has occurred. Reload 🗙

Rejoining the server...

Rejoin failed... trying again in seconds.

Failed to rejoin.
Please retry or reload the page.

The session has been paused by the server.

Failed to resume the session.
Please retry or reload the page.