- Dark Crystal' is a building with a global effect activated by a special ability; it makes all Tainted affinity cards refund some of their power immediately upon death. Note that it only affect cards with Tainted affinity, not cards that require Shadow orb .
- Power: 0
- Active to decompose those have an affinity towards Shadow: every own unit endowed with a Shadow affinity will immediately return 50% of the usual power refund into the actual power pool upon dying.Lasts for 20s or crystal is destroyed.
|Card Upgrade||Type or Ability||Effect|
|Dark Crystal I||Lifepoints||+40|
|Dark Crystal II||Lifepoints||+80|
|Dark Crystal III||Lifepoints||+80|
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