Neoform (WAR) from War of the Spark, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Bram Sels
• Card Text:
  As an additional cost to cast this spell, sacrifice a creature.
  Search your library for a creature card with converted mana cost equal to 1 plus the sacrificed creature’s converted mana cost, put that card onto the battlefield with an additional +1/+1 counter on it, then shuffle your library.