Zek, Fungal Saboteur

Forestwalk, Swampwalk
When Zek deals combat damage to a player, they reveal a card from their hand and place it on the
bottom of their library. Summon a 0/X
Mushroom Wall creature token with Defender
and "Sacrifice: Target player loses 2 life", where
X was that card's mana value.
"I ain't a fun guy."