"The Healer 's own special recipe! The Revive Spell brings a defeated Hero in its range back into the fight with some health. Bring this Spell into battle, and a floating golden heart will appear above any defeated Hero that can be revived. Upgrade the Revive Spell to increase the amount of health Heroes regain."
| Level | Hero heal | Research cost | Research time | Laboratory level required |
|---|---|---|---|---|
| 1 | 60% | N/A | N/A | N/A |
| 2 | 65% | 18,000,000 | 8d | 13 |
| 3 | 70% | 19,000,000 | 10d 12h | 14 |
| 4 | 75% | 20,000,000 | 11d 12h | 15 |