Sacrifice [Revised Edition] Avatar Incarnation but not for a way

but not for a way to control it

Whenever you cast an instant or sorcery spell

Set: Alpha Edition Type: Creature — Wall Rarity: Uncommon Cost: {1}{R}{R} Defender (This creature can't attack

Set: Zendikar Type: Instant — Trap Rarity: Mythic Cost: {2}{U}{U} If an opponent cast three or more spells this turn

Set: Classic Sixth Edition Type: Instant Rarity: Uncommon Cost: {U} Search your library for an instant or sorcery card

Sacrifice [Revised Edition] Avatar Incarnation but not for a waySet: Revised Edition Type: Instant Rarity: Uncommon Cost: {B} As an additional cost to cast this spell, sacrifice a creature. Add an amount of {B} equal to the sacrificed creature's mana value.