Mygwyl, Of Lost Koranor

Whenever Mygwyl enters the battlefield, choose one: flying, trample, islandwalk, haste, first strike or vigilance; creatures you control have whichever you chose, and creatures you control have +2/+2.
Augment 1 - Whenever you attack, if one or more creatures you control have +1/+1 counters on them, or gotten +1/+1 or more this turn, creatures you control get haste, islandwalk, first strike, trample and vigilance until end of turn.