Nadrig, Zealous Evolutionary

Evolve (Whenever a creature enters the battlefield
under your control, if that creature has greater power
or toughness than this creature, put a +1/+1 counter
on this creature.)
When Nadrig, Zealous Evolutionary enters the battlefield, you may draw 2 cards.
Whenever Nadrig, Zealous Evolutionary attacks,
create two 2/2 blue merfolk creature tokens with evolve.