Originally Posted by
locus
Which is totally a lot less useful than Teleport, so don't look forward to this one, as it doesn't go many places that teleport doesn't, or you can't get to easily using teleport. Also only works inside instances, which is baffling.
UMD lets you be more self sufficient, basically, as well as be an offhealer in a pinch, among other things, as mentioned. It's a really BAD skill however if you want to conserve inventory space, as carting around 20 scrolls, a half a dozen wands, etc, on top of trapsmithing items (and like 20 weapons at lower levels) really hurts.