|Memorable Old Hat|
|It's the Mad Hatter Gumball's top hat, full of unstable factors. As for the actual effect, you will never know until using it.|
|Use: Regress by 5-20 floors immediately (Invalid in special floor)|
|Source(s):||Created by Mad Hatter when entering next floor|
- If used immediately after a White Purity Top Hat, backtracks 20 floors.
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