英雄たちの送り火/Pyre of Heroes

Artifact -
{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has converted mana cost equal to 1 plus that creature's converted mana cost. Put that card onto the battlefield, then shuffle your library. Activate this ability only any time you could cast a sorcery.

Artifact -
{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value equal to 1 plus that creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.