During the Main Phase: Target 1 "K9" Xyz Monster you control; Special Summon from your Extra Deck, 1 "K9" Xyz Monster with a different name, by using that monster you control (this is treated as an Xyz Summon, transfer its materials to the Summoned monster), then you can destroy 1 card your opponent controls.

At the end of the Battle Phase, if your "K9" monster battled this turn: You can Set this card from your GY.