Kla, Of Abominations

Trample, Haste

Lands your opponent controls comes into the
battlefield tapped. If an opponent would tap lands for mana. They have to pay {2}. If they don't that player
loses 2 life.

Green creature spells you cast have {p/g}. If 2 life was paid to cast a creature. Put two +1/+1 counters on that creature.