Mask of Darkness [DLG1-EN028] Rare Zombie You can only use this

You can only use this effect of "Guardragon Pisty" once per turn

and your opponent must activate it during the End Phase or else send it to the GY

You do not use "Polymerization" to Special Summon this monster from your Fusion Deck

Set: 2014 Mega-Tins Mega Pack Card type: Effect Monster Rarity: Rare Attack: 1000 Defense: 0 When this card is sent to the Graveyard because of a card effect or by being destroyed by battle: You can add 1 "Archfiend" card from your Deck to your hand

Mask of Darkness [DLG1-EN028] Rare Zombie You can only use thisSet: Dark Legends Card type: Effect Monster Rarity: Rare Attack: 900 Defense: 400 FLIP: Add 1 Trap Card from your Graveyard to your hand.