Aleister the Invoker of Madness (Ultra Rare)

2 monsters with different Types and different Attributes
This card's name becomes Aleister the Invoker while on the field or in the GY. If a monster is Fusion Summoned while you control this monster (except during the Damage Step): You can discard 1 card, and if you do, add 1 Invocation or The Book of the Law from your Deck to your hand. If this face-up card you control leaves the field because of an opponent's card effect: You can add 1 Omega Summon from your Deck to your hand.