Fusion
UPGRADE FORMULA
- 1 Rare HERO (100%) = 2 Common HERO + 1 Soul Stone Rare + 50 HERA
- 1 Elite HERO (100%) = 2 Rare HERO + 1 Soul Stone Elite + 1 Lucky Stones + 50 HERA
- 1 Legendary HERO (100%) = 2 Elite HERO + 1 Soul Stone Legendary + 2 Lucky Stones + 50 HERA
- 1 Immortal HERO (100%) = 2 Legendary HERO + 1 Soul Stone Immortal + 3 Lucky Stones + 50 HERA