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.

{T}: Add {C}. {T}: Add {U} or {B}. This artifact deals 1 damage to you.

({T}: Add {U} or {B}.) This land enters tapped unless you control two or more basic lands.