[loramin]

I found the (not bugged) version of Enstill on its proper vendor in Neriak 3rd Gate. The one I reported came from one of the vendors in Neriak Commons, but since none of them sell the spell it must have been sold to a vendor by a player (and I have no idea where it originally came from).

Maybe this is a weird Verant thing, but it seems pretty odd to have two otherwise identical versions of the exact same spell in the game ... but one is for every class (including Enchanter) and one is only for an Enchanter.