[JaiR8hiK]

This is morrowind, where there is not just invisibility but also chameleon. If you boosted it high enough you essentially were undetectable while stabbing someone in the face under the watch of an ordinator. (Invisibility wears off on actions; Chameleon is more expensive, but does not)

Not that you actually need it, since you can also be invulnerable, perma-healing, damage-to-health converting, flying, damage-reflecting one-hit-killing at the same time. But yes, stealth is an option.