Diabolos, King of the Abyss [FOTB-EN061] Secret Rare Duelist Saga you can Tribute this face-up

you can Tribute this face-up monster to destroy all face-up Attack Position monsters your opponent controls and inflict damage to your opponent equal to the combined original ATK of those destroyed monster(s)

and destroy all monsters with an ATK of 1500 or less

When that monster is destroyed

and you take no Battle Damage from battles involving this card

Once per turn: You can discard 1 DARK monster

Diabolos, King of the Abyss [FOTB-EN061] Secret Rare Duelist Saga you can Tribute this face-upSet: Force of the Breaker Card type: Effect Monster Rarity: Secret Rare Attack: 2800 Defense: 1000 This card cannot be Special Summoned. If you Tribute Summon this card, the Tributes must be DARK. This card cannot be Tributed by a card's effect. During your opponent's Draw Phase, before their draw, look at the top card of their Deck, then put that card on the top or the bottom of their Deck.