Mythos of Nethroi
Instant
Destroy target nonland permanent if it's a creature or if 
was spent to cast this spell.
"And then the shadow took living form, and the shadow devoured the man whole—body, mind, and soul." —*Tales of the Ozolith*
- Set
- Ikoria: Lair of Behemoths (IKO #97)
- Rarity
- Rare
- Mana value
- 3
- Released
- 2020-04-24
- Artist
- Seb McKinnon
- EDHREC rank
- #9,474
- Colour identity
- Finishes
- Nonfoil, Foil
- Served from
- Local database
Commander bracket
Derived from card traits, not a ruling — bracket rules turn on how a deck intends to use a card. Bracket rules
EDHREC
Combos
Not part of any combo on Commander Spellbook.
Format legality
Rulings
- 2020-04-17
If an effect allows you to cast a spell without paying its mana cost, you can’t choose to cast it and pay unless another rule or effect allows you to cast that spell for a cost. Similarly, you can’t waive a cost reduction unless that effect says you may.
- 2020-04-17
If an effect copies the Mythos spell, no mana was spent to cast the copy, so the copy won’t receive the bonus.
- 2020-04-17
Mythos of Nethroi can target any nonland permanent. Determine as the spell resolves whether the permanent is destroyed, either because it’s a creature at that time or because
was spent to cast the spell. - 2020-04-17
The abilities of the Mythos check what colors of mana were spent to cast the spell. It’s not an alternative cost to cast the spell.
- 2020-04-17
The ability checks what mana was actually spent to cast a spell. If an effect allows you to spend mana “as though it were mana” of any color or type, that allows you to spend mana you couldn’t otherwise spend, but it doesn’t change what mana you spent to cast the spell.