Artillery Catapult Turtle (Ultra Rare)

While this card is in your GY, if a Salamangreat Link Monster you control leaves the field because of an opponent's card effect (except during the Damage Step): You can Special Summon 2 Level 4 Salamangreat monsters from your GY, including this card, but negate their effects, and if you do, immediately after this effect resolves, Xyz Summon 1 Salamangreat Xyz Monster, using only those 2 monsters. You can only use this effect of Salamangreat Zebroid X once per turn. An Xyz Monster that was Summoned using this card on the field as material gains this effect.
* This card gains 300 ATK for each material attached to it.