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| Set: | Speed Duel: Battle City Box |
| Card type: | Equip Spell |
| Rarity: | Common |
Equip only to a monster you control. If the equipped monster battles an opponent's monster, the equipped monster's original ATK/DEF is doubled during damage calculation only. If you control a monster other than the equipped monster, send this card to the GY. You can only control 1 "Solitary Sword of Poison".