Steamroid [DR04-EN008] Rare BT7-122_PR and many more sets that

and many more sets that can only be found in Hobby products

Set: Malicious Machinations Prerelease Promos Rarity: Common Color: Black Card type: Extra

You can only use this effect of "Darklord Ukoback" once per turn

your opponent cannot activate cards or effects when you Normal or Special Summon a monster(s)

Steamroid [DR04-EN008] Rare BT7-122_PR and many more sets thatSet: Dark Revelation Volume 4 Card type: Effect Monster Rarity: Rare Attack: 1800 Defense: 1800 If this card attacks an opponent's monster, this card gains 500 ATK during the Damage Step only. If this card is attacked by an opponent's monster, this card loses 500 ATK during the Damage Step only.