Outer Entity Nyarla (LAVD-ENL37)

2 Level 4 monsters
When this card is Xyz Summoned: You can discard any number of cards; increase this card's Rank by the number of discarded cards. Once per turn, while this card has Xyz Material: You can target 1 monster in your GY; detach all materials from this card, and if you do, attach that target to this card as material. When a monster is attached by this effect, this card's Type and Attribute become the same as that monster's original Type and Attribute.