UB - Nihilego

Nihilego, one of the Ultra Beasts

Effect: 3 Level 3 monsters
Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up monster your opponent controls; equip that target to this card (you can only equip 1 monster at a time to this card with this effect). This card gains ATK equal to half the original ATK of the monster equipped to it by this effect. If this card attacks a Defense Position monster, inflict double piercing battle damage to your opponent. If this card would be destroyed by battle, destroy that equipped monster instead. While equipped with that monster, any battle damage you take from battles involving this card inflicts equal effect damage to your opponent.