Debunk [LC5D-EN255] Secret Rare 144 As long as the top

As long as the top card of your library is black

Set: European Land Program Type: Basic Land — Mountain Rarity: Common ({T}: Add {R}

If that target destroys a monster by battle and sends it to the Graveyard: Inflict damage to your opponent equal to the ATK of the destroyed monster in the Graveyard

The ATK of this card becomes the combined original ATK of the Tributed monsters

and ponderings

Debunk [LC5D-EN255] Secret Rare 144 As long as the topSet: Legendary Collection 5D's Card type: Counter Trap Rarity: Secret Rare Attack: 0 Defense: 0 When a monster effect is activated in the hand or Graveyard: Negate the activation, and if you do, banish it.