Dimensional Ascension

Special Summon 1 monster that mentions "Endless Darkness" from your GY or banishment, or if you activated this card the turn your opponent activated a card or effect, you can Special Summon from your Deck instead. At the start of the Battle Phase: You can banish this card from your GY; Special Summon 1 of your banished "Blue-Eyes White Dragon", but banish it at the end of the Battle Phase. You can only use each effect of "Dimensional Ascension" once per turn.