Wildsize

Target creature gets +2/+2 and gains trample until end of turn.
Draw a card.

Forced Adaptation

Enchant creature
At the beginning of your upkeep, put a +1/+1 counter on enchanted creature.

Target creature gets +2/+2 until end of turn.
Coven — Then if you control three or more creatures with different powers, draw a card.

Target creature gets +1/+2 until end of turn.
Flashback {W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant creature
Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature.