King Imp, Doom

+1: Target imp you control gains +2/+0 and Decayed until end of turn.
0: Until end of turn, King Imp, Doom becomes a 5/5 Doom Imp with indestructible and haste.
-3: Imps you control have base power and toughness of 2/2 and gain indestructible and haste until end of turn.