bec7ae95_Evil_Eye___Dragon_s_Dogma_Wiki__Description
[Attack] Regenerate [Type] Spec [Description] 
After it has lost all its tentacles on the main body, it will eventually teleport away and adopt a regenerating stance. While it is regenerating, its barrier is down, so try to stun it before all the tentacles regrow. If you fail, all tentacles will be back.
Evil Eye - Dragon's Dogma Wiki
Description