Chaos Form (LDS2-EN025)

This card can be used to Ritual Summon any "Chaos" or "Black Luster Soldier" Ritual Monster. You must also Tribute monsters from your hand or field and/or banish "Blue-Eyes White Dragon" or "Dark Magician" from your GY, whose total Levels exactly equal the Level of the "Chaos" or "Black Luster Soldier" Ritual Monster you Ritual Summon.

spell / Ritual, Legendary Duelists: Season 2