ZEYRA WIKI / Spirit stones
Boss Stone+4
Can be upgraded up to +5. Insert it into armor to increase damage dealt to Bosses.
Effect & use
Strong against Bosses 8%
Where to obtain
Boss Stone+3Upgraded fromSources
Materials required
Soul of Truth
×10
Upgraded from
All grades & base upgrade costs
Stats per grade
| Grades | Level | Attributes | Cost to next grade | Base success chance |
|---|---|---|---|---|
| +0 | No level requirement | Strong against Bosses 1% | 2,500,000 | 90% |
| +1 | No level requirement | Strong against Bosses 2% | 5,000,000 | 80% |
| +2 | No level requirement | Strong against Bosses 4% | 7,500,000 | 70% |
| +3 | No level requirement | Strong against Bosses 6% | 10,000,000 | 60% |
| +4 | No level requirement | Strong against Bosses 8% | 15,000,000 | 50% |
| +5 | No level requirement | Strong against Bosses 10% | Not applicable | Not applicable |
Materials and cost
Starting item: Boss Stone+4
Total required
Materials and Yang per attempt at the selected step, multiplied by the attempt count. No expected success cost is calculated.