Karn, Scion of Urza [Dominaria Prerelease Promos] Phyrexian Dragon Skeleton you can declare 1 card

you can declare 1 card name

Set: HeartGold & SoulSilver: Base Set Type: Lightning Rarity: Rare Retreat cost: 0

When this card is Tribute Summoned successfully

When this card destroys your opponent's monster by battle and sends it to the Graveyard: Inflict 1000 damage to your opponent

Karn, Scion of Urza [Dominaria Prerelease Promos] Phyrexian Dragon Skeleton you can declare 1 cardSet: Dominaria Prerelease Promos Type: Legendary Planeswalker Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it. 1: Put a card you own with a silver counter on it from exile into your hand. 2: Create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control."