
Whenever Marvo attacks, clash with defending player. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)
Whenever you win a clash, draw a card. Then you may cast a spell from your hand with mana value 8 or less without paying its mana cost.
Marvo, Deep Operative has 3 printings, first in Murders at Karlov Manor Commander (2024). EDHREC ranks it #7,253 among Commander cards. It appears most in Runo Stromkirk // Krothuss, Lord of the Deep decks (2,914 on EDHREC). 2 public decks on TCG run it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.