Ilsensine is a mental/spiritual deity manifesting as a glowing green brain; the Power itself has an infinite number of tentacles of infinite length which radiate through all planes from its base on the Plane of Concordant Opposition. Its motivation is for the illithid race to conquer all planes through superiority and mental domination, through superior knowledge and magic which is an expression of will and mental force. Fortunately for other beings, Ilsensine is such a supremely arrogant entity that it spends much time in brooding fantasies of domination and is often too self-absorbed to actually act.