Frenzied Devils

Flying

Whenever you cast a noncreature spell or a Dragon spell, this creature gets +2/+0 until end of turn.

Whenever you cast a multicolored spell, this creature gets +3/+3 until end of turn.

Heroic — Whenever you cast a spell that targets this creature, gain control of another target creature until end of turn. Untap that creature. It gains haste until end of turn.

Haste

: This creature gets +1/-1 until end of turn.

: Until end of turn, whenever you cast a black spell, put a +1/+1 counter on this creature.

Trample

Whenever you expend 4, this creature gets +2/+1 until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)