Neoform 206 (War of the Spark)

As an additional cost to cast this spell, sacrifice a creature. Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield with an additional +1/+1 counter on it, then shuffle.

NM - $2.70
LP - $2.10
MP - $1.60
HP - $1.10
DMG - $0.70