Contents
The Black Mine is a separate map where alliances mine refined crystals. Rosters go up to 350 players, and groups are matched by Sanctuary level, from 15-25 up to 37-45.
Veins
| Vein | Stock | Rate |
|---|---|---|
| Crystal Cluster 1 | 8 640 | 12 |
| Crystal Cluster 2 | 17 280 | 24 |
| Crystal Cluster 3 | 34 560 | 48 |
| Instant Cluster 4 | 4 000 | 200 |
Regular veins double in stock per level; instant clusters are small but drained far faster.
Mine skills
Skills use local experience and come in pairs: you pick one of two, 5 times in total. Costs rise: 200, 500, 900, 1500, 2300.
| Skill | Effect | Cost |
|---|---|---|
| Crystal Surge | Periodically gain 1080 Purified Crystals | 200 |
| Plague Rat Hunter | Gain 1500 extra Crystals when you slay a Plague Rat | 200 |
| Force Expansion | Single Hero March Capacity +50 | 500 |
| Swift March | Troop March Speed in Crystal Cluster Valley +25% | 500 |
| Valley Plunder | Gain 5000 extra Purified Crystals when you seize a Lode. CD: 60s | 900 |
| Valley Vigil | Gain 5000 extra Purified Crystals when you fail to seize a Lode. CD: 60s | 900 |
| Crystal Mining | Crystal Cluster Gathering Speed increases by 15% | 1 500 |
| Iron Will | Reduces the duration of debuffs received by 30s | 1 500 |
| Valley Awakening | Increases Hero DMG by 15% for 60s. CD: 300s | 2 300 |
| Crystal Resonance | Temporarily increases Crystal Cluster Gathering Speed by 50% for 60s. CD: 300s | 2 300 |
The choices matter: the third pair puts a reward for capturing someone else's vein against a reward for surviving an attack, which is a choice between offence and defence for the whole season.
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