“Activates at the end of every battle, increasing card and gear drop rates by 20%. In exchange, your max HP is reduced by 15% and your base damage and defense are reduced by 1. One of the Lost Gears of Overgrown Grotto. [#10/10]”
Overview[]
Challenge Power
Challenge Power is a Power that increases the chance of 
Cards and 
Gear being dropped, but lowers the player's 
HP, along with your 
Power & 
Defense being reduced by 1.
Like all powers, the effect of it is boosted based on the player's level.
Unlike Spore Spray, Challenge Power can cause your initial Damage to be 0, meaning opponents with no Defense will still block your attack.
| Tier | Effect | Unlock Level |
|---|---|---|
| 1 | Card and Gear drop rates +20%
|
1-24 |
| 2 | N/A | 25+ |