The tooltip for the Nightblade's Summon Shade skill and its morphs say, "Summon a shade version(s) of yourself to attack an enemy and fight at your side for X seconds."
Please update the tooltips to remove the "version(s) of yourself" wording, as the shades do not look like our characters - especially Argonians and Khajiits, which have tails.
It's a simple language fix that correctly describes the skill. Thanks.