Barrel Dragon [STP2-EN003] Ultra Rare Power of the Duelist you can negate the activation

you can negate the activation of a Spell/Trap Card

Set: OTS Tournament Pack 12 Card type: Counter Trap Rarity: Ultimate Rare When a monster would be Summoned

Set: Ancient Sanctuary Card type: Normal Spell Rarity: Ultra Rare You can only activate this card when there is a face-up Dark Magician on your side of the field

"Elemental Hero"

Set: Return of the Duelist Card type: Xyz/Effect Monster Rarity: Ghost Rare Attack: 2000 Defense: 2000 2 Level 4 Warrior-Type monsters // Once per turn: You can detach 2 Xyz Materials from this card

Barrel Dragon [STP2-EN003] Ultra Rare Power of the Duelist you can negate the activationSet: Speed Duel: Tournament Pack 2 Card type: Effect Monster Rarity: Ultra Rare Attack: 2600 Defense: 2200 Once per turn: You can target 1 monster your opponent controls; toss a coin 3 times and destroy it if at least 2 of the results are heads.