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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
2026-11-09
Artist
Michal Ivan
EDHREC rank
#8,105
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 0.25
How much players resent seeing this card. The scale tops out around 3.1.
Can be your commander

Combos 70

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
4,443 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
3,303 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
2,021 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
684 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
222 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
126 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
103 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
38 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Liquimetal Torque
{R}{W}
Infinite triggers from the creature with a tap trigger
17 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
16 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Tidewater Minion
{U}{R}{W}
Infinite mana permanents you control can produce
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
8 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
7 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Liquimetal Coating
{R}{W}
Infinite triggers from the creature with a tap trigger
7 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Mycosynth Lattice
{R}{W}
Infinite triggers from the creature with a tap trigger
7 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
4 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
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
3 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
3 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+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
2 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 ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Liquimetal Torque
{R}{W}
Infinite lifegainInfinite lifegain triggers
1 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 ↗
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+Oreskos Sun Guide+Mycosynth Lattice
{R}{W}
Infinite lifegainInfinite lifegain 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+Clock of Omens+Oreskos Sun Guide+Liquimetal Coating
{R}{W}
Infinite lifegainInfinite lifegain triggers
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 ↗
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+Clock of Omens+Memnarch
{U}{R}{W}
Infinite triggers from the creature with a tap trigger
1 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Sphinx's Disciple+Liquimetal Torque
{U}{R}{W}
Infinite card drawInfinite draw triggers
0 decks Commander Spellbook ↗
The Jolly Balloon Man+Ertha Jo, Frontier Mentor+Glamermite
{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+Biotransference
{W}{U}{B}{R}
Infinite mill
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+Clock of Omens+Servant of Tymaret+Memnarch
{W}{U}{B}{R}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Biotransference
{R}{W}{B}
Infinite lifegainInfinite lifegain triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Pheres-Band Tromper+Liquimetal Coating
{R}{G}{W}
Infinite +1/+1 counters on a creature
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Pheres-Band Tromper+Encroaching Mycosynth
{R}{G}{W}{U}
Infinite +1/+1 counters on a creature
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Sphinx's Disciple+Encroaching Mycosynth
{U}{R}{W}
Infinite card drawInfinite draw triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Servant of Tymaret+Biotransference
{R}{W}{B}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Siren of the Silent Song+Liquimetal Coating
{W}{U}{B}{R}
Infinite mill
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Servant of Tymaret+Liquimetal Coating
{R}{W}{B}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Sphinx's Disciple+Liquimetal Coating
{U}{R}{W}
Infinite card drawInfinite draw triggers
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Pheres-Band Tromper+Liquimetal Torque
{R}{G}{W}
Infinite +1/+1 counters on a creature
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Biotransference
{R}{W}{B}
Infinite triggers from the creature with a tap trigger
0 decks Commander Spellbook ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Oreskos Sun Guide+Memnarch
{U}{R}{W}
Infinite lifegainInfinite lifegain 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 ↗
Ertha Jo, Frontier Mentor+Clock of Omens+Servant of Tymaret+Liquimetal Torque
{R}{W}{B}
Infinite lifegainInfinite lifegain triggersInfinite lifeloss
0 decks Commander Spellbook ↗

Showing the 50 most played of 70.

Commander recommendations

Top synergy 50

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

  1. Humble Defector 74 %+71.4 %
  2. Soulbright Flamekin 66 %+65.5 %
  3. Brash Taunter 63 %+57.8 %
  4. Yes Man, Personal Securitron 57 %+54.7 %
  5. Loran of the Third Path 64 %+51.1 %
  6. Jaxis, the Troublemaker 51 %+49.8 %
  7. Realmbreaker, the Invasion Tree 47 %+47.2 %
  8. Angelic Sell-Sword 47 %+47.0 %
  9. The Jolly Balloon Man 53 %+46.9 %
  10. Mishra's Bauble 48 %+46.3 %
  11. Intrepid Hero 44 %+43.6 %
  12. Captivating Crew 45 %+43.3 %
  13. Form a Posse 43 %+41.6 %
  14. Chandra, Dressed to Kill 42 %+41.5 %
  15. Spikeshot Goblin 41 %+41.1 %
  16. Orthion, Hero of Lavabrink 41 %+39.8 %
  17. Chaos Wand 40 %+39.5 %
  18. Zirda, the Dawnwaker 43 %+39.5 %
  19. Thousand-Year Elixir 42 %+38.8 %
  20. Hellspur Posse Boss 38 %+38.0 %
  21. Mother of Runes 49 %+36.3 %
  22. Marvin, Murderous Mimic 38 %+33.7 %
  23. Brimstone Roundup 34 %+33.5 %
  24. Bounty Agent 34 %+33.2 %
  25. Bounty Board 33 %+33.1 %
  26. Teyo, Geometric Tactician 32 %+32.0 %
  27. Drumbellower 35 %+31.8 %
  28. Chandra, Bold Pyromancer 32 %+31.6 %
  29. Slayers' Stronghold 51 %+31.5 %
  30. Maze of Ith 34 %+30.9 %
  31. Brigid, Hero of Kinsbaile 31 %+30.9 %
  32. Spikeshot Elder 30 %+29.8 %
  33. Chandra, Fire of Kaladesh 29 %+28.7 %
  34. Magda, the Hoardmaster 30 %+28.2 %
  35. Furystoke Giant 28 %+28.1 %
  36. Strago and Relm 28 %+27.7 %
  37. Auriok Bladewarden 27 %+27.0 %
  38. Magewright's Stone 28 %+26.5 %
  39. Giver of Runes 33 %+26.5 %
  40. Sunhome, Fortress of the Legion 41 %+25.5 %
  41. Elspeth Resplendent 26 %+25.1 %
  42. Agrus Kos, Eternal Soldier 26 %+24.9 %
  43. Kiki-Jiki, Mirror Breaker 28 %+24.5 %
  44. The Wandering Emperor 25 %+24.2 %
  45. The Eternal Wanderer 25 %+23.8 %
  46. Urza's Bauble 24 %+23.7 %
  47. Fire Nation Palace 26 %+23.6 %
  48. Taii Wakeen, Perfect Shot 25 %+23.3 %
  49. Skrelv, Defector Mite 29 %+23.0 %
  50. To Arms! 24 %+22.9 %

Most included 50

Highest share of decks running them, distinctive or not.

  1. Mountain 98 %+0.2 %
  2. Plains 98 %-0.3 %
  3. Command Tower 82 %-3.9 %
  4. Arcane Signet 78 %-1.5 %
  5. Humble Defector 74 %+71.4 %
  6. Sol Ring 74 %-11.0 %
  7. Clifftop Retreat 68 %+0.6 %
  8. Soulbright Flamekin 66 %+65.5 %
  9. Loran of the Third Path 64 %+51.1 %
  10. Brash Taunter 63 %+57.8 %
  11. Boros Signet 62 %+13.5 %
  12. Talisman of Conviction 61 %+9.2 %
  13. Battlefield Forge 59 %+1.2 %
  14. Yes Man, Personal Securitron 57 %+54.7 %
  15. The Jolly Balloon Man 53 %+46.9 %
  16. Swords to Plowshares 53 %-13.1 %
  17. Slayers' Stronghold 51 %+31.5 %
  18. Jaxis, the Troublemaker 51 %+49.8 %
  19. Rugged Prairie 50 %+4.9 %
  20. Mother of Runes 49 %+36.3 %
  21. Path to Exile 49 %-8.7 %
  22. Mishra's Bauble 48 %+46.3 %
  23. Angelic Sell-Sword 47 %+47.0 %
  24. Realmbreaker, the Invasion Tree 47 %+47.2 %
  25. Boros Garrison 46 %+12.0 %
  26. Captivating Crew 45 %+43.3 %
  27. Intrepid Hero 44 %+43.6 %
  28. Rogue's Passage 44 %+13.7 %
  29. Sacred Foundry 44 %-4.2 %
  30. Zirda, the Dawnwaker 43 %+39.5 %
  31. Form a Posse 43 %+41.6 %
  32. Thousand-Year Elixir 42 %+38.8 %
  33. Chandra, Dressed to Kill 42 %+41.5 %
  34. Spikeshot Goblin 41 %+41.1 %
  35. Sunhome, Fortress of the Legion 41 %+25.5 %
  36. Orthion, Hero of Lavabrink 41 %+39.8 %
  37. Furycalm Snarl 40 %-4.1 %
  38. Sundown Pass 40 %+0.1 %
  39. Chaos Wand 40 %+39.5 %
  40. Spectator Seating 40 %+0.6 %
  41. Hellspur Posse Boss 38 %+38.0 %
  42. Temple of Triumph 38 %+1.8 %
  43. Marvin, Murderous Mimic 38 %+33.7 %
  44. Blasphemous Act 35 %+2.3 %
  45. Drumbellower 35 %+31.8 %
  46. Boros Charm 34 %-12.5 %
  47. Maze of Ith 34 %+30.9 %
  48. Bounty Agent 34 %+33.2 %
  49. Brimstone Roundup 34 %+33.5 %
  50. Bounty Board 33 %+33.1 %

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.

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