Yu-Gi-Oh! Worldwide Edition: Stairway to the Destined Duel promotional cards

Target 1 face-down Defense Position monster on the field; flip it face-up, then destroy it if its DEF is 2000 or less, or return it face-down if its DEF is more than 2000.

Acid Trap Hole

Destroy all Spell and Trap Cards your opponent controls.

Harpie's Feather Duster

Equip only to a FIRE monster. It gains 700 ATK.

Salamandra

A mystical dragon that burns away the unworthy with its mystic flames.

Seiyaryu

During your Standby Phase, if this card is in your GY: You can add it to your hand, also banish 1 "Sinister Serpent" from your GY during your opponent's next End Phase. You can only use this effect of "Sinister Serpent" once per turn.

Sinister Serpent

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by Tributing 1 "Alpha The Magnet Warrior", "Beta The Magnet Warrior", and "Gamma The Magnet Warrior" from your hand and/or field. You can Tribute this card, then target 1 "Alpha The Magnet Warrior", "Beta The Magnet Warrior", and "Gamma The Magnet Warrior" in your Graveyard; Special Summon them.