Evilswarm Ophion (HA07-EN064)

2 Level 4 "lswarm" monsters

While this card has Xyz Material, Level 5 or higher monsters cannot be Special Summoned. Once per turn: You can detach 1 Xyz Material from this card; add 1 "Infestation" Spell/Trap Card from your Deck to your hand.

Dragon / Xyz / Effect, Hidden Arsenal 7: Knight of Stars