Evilswarm Ophion [DT07-EN091] Super Rare Sea Serpent You can only use each

You can only use each of these effects of "Nekroz of Brionac" once per turn

shuffle the destroyed monster into the Deck instead of sending it to the Graveyard

Once per turn

this card gains 500 ATK

by Tributing 1 Thunder Effect non-Fusion Monster (in which case you do not use "Polymerization")

Evilswarm Ophion [DT07-EN091] Super Rare Sea Serpent You can only use eachSet: Duel Terminal 7 Card type: Xyz Effect Monster Rarity: Super Rare Attack: 2550 Defense: 1650 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.