2 Level 4 monsters

You can also Xyz Summon this card by using a "Ghostrick" Xyz Monster you control as the Xyz Material, except "Ghostrick Angel of Mischief". (Xyz Materials attached to that monster also become Xyz Materials on this card.) When the number of Xyz Materials on this card becomes 10, you win the Duel. Once per turn: You can detach 1 Xyz Material from this card; add 1 "Ghostrick" Spell/Trap Card from your Deck to your hand. Once per turn: You can attach 1 "Ghostrick" card from your hand to this card as an Xyz Material.