Feru, Alliance-Forger

Whenever a creature an opponent controls
attacks an opponent, you may choose to have it
gain +2/+2, flying, skulk, menace, first strike,
shadow, prowess, trample, haste, shroud, indestructible, vigilance or deathtouch (your
choice) until end of turn.
"The enemy of my enemy is my friend, and while we
may not be friends for long, let us make it worthwhile."