Return target creature and all white Auras you own attached to it to their owners' hands.

: Target creature gets +1/+1 until end of turn.

Trample, haste
Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever Ydwen Efreet blocks, flip a coin. If you lose the flip, remove Ydwen Efreet from combat and it can't block this turn. Creatures it was blocking that had become blocked by only Ydwen Efreet this combat become unblocked.

Sacrifice a land: You gain 2 life.