Mask of Weakness
| Name | Mask of Weakness |
| Card Type | Trap Card |
| Property |
Normal 
|
| Passcode | 57882509 |
| Status (TCG) | Unlimited |
Target 1 attacking monster; that target loses 700 ATK until the end of this turn.
Expansions
| 2020-11-26 | Speed Duel: Battle City Box | SBCB-EN123 |
|
| 2015-05-28 | 2-Player Starter Deck: Yuya & Declan | YS15-END19 |
|
| 2014-07-31 | Battle Pack 3: Monster League | BP03-EN190 |
|
| 2013-06-28 | Battle Pack 2: War of the Giants | BP02-EN174 |
|
| 2011-02-12 | Demo Deck | DEM1-EN016 |
|
| 2010-01-29 | Duel Terminal 1 | DT01-EN047 |
|
| 2008-08-04 | Duel Terminal - Preview | DTP1-EN017 |
|
| 2004-10-12 | Dark Beginning 1 | DB1-EN218 |
|
| 2004-03-01 | Labyrinth of Nightmare | LON-015 LON-EN015 LON-E015 |
|