“Spark” monsters you control gain 100 ATK and DEF for each “Spark” Counter on the field. Once per turn, if a “Spark” Counter is removed from the field: You can pay 500 LP; Special Summon 1 “Spark” monster from your GY, and if you do, and it is an Xyz Monster, you can attach 1 “Spark” card from your GY to it as material.