Worldsea Dragon Zealantis [DABL-EN050] Secret Rare
1st Edition - NM
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![Stronghold the Moving Fortress [OP11-EN021] Common](https://cdn.shopify.com/s/files/1/0451/3388/9694/files/13950672-d0ba-521b-af92-8d3b4516ff91.jpg?v=1731907769)
Stronghold the Moving Fortress [OP11-EN021] Common
| Set: | OTS Tournament Pack 11 |
| Card type: | Continuous Trap |
| Rarity: | Common |
Special Summon this card in Defense Position as an Effect Monster (Machine-Type/EARTH/Level 4/ATK 0/DEF 2000). (This card is also still a Trap Card.) While you control "Green Gadget", "Red Gadget", and "Yellow Gadget", this card gains 3000 ATK.