You can only use the (1)st and (2)nd effect of this card’s name each once per turn.
(1) During the Main Phase: Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand or field as material, including a “Memento” monster. If a monster(s) in your possession was destroyed by card effect this turn, you can also use “Memento” monsters in your GY as material, by shuffling them into the Deck.
(2) During your Main Phase: You can banish this card from your GY; destroy 1 monster you control, and if you do, add 1 “Memento” Spell/Trap from your Deck to your hand.