| File:Hydra Gem 1.png | File:Hydra Gem 2.png | File:Hydra Gem 3.png | File:Hydra Gem 4.png | File:Hydra Gem 5.png | File:Hydra Gem 6.png |
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A Hydra Gem enhances Hero's Energy Recovery and Maximum Energy Level for attacking kingdom monsters. It is acquired through attacking a Hydra during the Hydra event in 2014.
Attributes[]
The table below shows how the Hydra Gem affects the following attributes:
| Boost | Rank 1 | Rank 2 | Rank 3 | Rank 4 | Rank 5 | Rank 6 |
|---|---|---|---|---|---|---|
| Energy Recovery | +10% | +12.5% | +15% | +20% | +30% | +50% |
| Maximum Energy Limit | +100 | +150 | +200 | +250 | +300 | +500 |