Shonen Jump Championship 2009 Prize Card

Tribute 1 DARK monster with 1000 or less ATK; your opponent takes no damage until the end of the next turn after this card resolves, also, you look at your opponent's hand and all monsters they control, and if you do, destroy the monsters among them with 1500 or more ATK, then your opponent can destroy up to 3 monsters with 1500 or more ATK in their Deck.

Crush Card Virus

1 Tuner + 1 or more non-Tuner DARK monsters
Once per turn: You can target 1 monster your opponent controls; this card loses 500 ATK and DEF, and you send that target to the Graveyard.

Dark End Dragon

Cannot be Special Summoned. If a monster effect is activated (Quick Effect): Tribute this face-up card; negate the activation, and if you do, destroy that monster.

Doomcaliber Knight

Banish 1 card from your Deck, face-up. During your second Standby Phase after this card's activation, add that card to the hand.