Summoned Skull [RP01-EN024] Super Rare Professor Program Promos it gains this effect

it gains this effect

Set: Champion Pack 2 Card type: Normal Spell Rarity: Super Rare Destroy 1 face-up monster with the highest DEF on your opponent's side of the field

When this monster attacks a face-down Defense Position monster

when a Spell/Trap Card or another monster's effect is activated: You can shuffle 1 face-up Pendulum Monster from your Extra Deck into the Deck

and they are destroyed during the End Phase this turn

Summoned Skull [RP01-EN024] Super Rare Professor Program Promos it gains this effectSet: Retro Pack 1 Card type: Normal Monster Rarity: Super Rare Attack: 2500 Defense: 1200 (This card is always treated as an "Archfiend" card.)