Xiangke Magician

Pendulum Effect : Once per turn: You can target 1 face-up Xyz Monster you control; this turn, you can use it as an Xyz Material for an Xyz Summon using its Rank as if it were a Level (even if this card leaves the field).
Monster Effect :Once per turn, during either player's turn: You can target 1 LIGHT monster on the field; that face-up monster has its effects negated until the end of this turn.