Thought Ruler Archfiend (Green) [DL11-EN014] Rare XY21 and it cannot be used

and it cannot be used as a Synchro Material Monster

Set: XY: BREAKthrough Type: Lightning Rarity: Holo Rare

When your opponent's monster declares an attack

Set: Duelist League Promo Card type: Field Spell Rarity: Rare All monsters on the field and in every Graveyard become Zombie-Type monsters

Thought Ruler Archfiend (Green) [DL11-EN014] Rare XY21 and it cannot be usedSet: Duelist League Promo Card type: Synchro Effect Monster Rarity: Rare Attack: 2700 Defense: 2300 1 Tuner + 1 or more non Tuner monsters When this card destroys a monster by battle and sends it to the Graveyard, gain Life Points equal to that monster's original ATK. You can pay 1000 Life Points to negate the activation of a Spell or Trap Card that targets exactly 1 Psychic Type monster, and destroy it.