Ghaunadar, of the Far Realm

Trample, Toxic 2, Ward — Discard a card
When you cast Ghaunadar, or whenever it attacks, put a transformation counter on up to 5 target creatures. Creatures with such counters on them have: "On your upkeep, for each transformation counter, put a +1/+1 counter on this creature, and deal that much damage to its controller. Then, if it has 3 or more transformation counters, exile this creature its controller puts a 0/1 plant cre