Congrats.
First win on the 20-floor Tower.
Yeah, with Light resistance, your chance of being Muted is low enough most enemies won't bother even trying to land it on you.
Enemies who pass it on w/ physical attacks... or who have very high Cunning... may still try, but that'd be about it. (Note for Sandman's question: I think what Shadow was saying was that Slow + Aithir's Light Darts becomes deadly, but with Light resistance, the Light Darts don't matter much even if you get Slowed.)
Didn't know about the Wintry Touch description bug.
Fixed locally though. Probably won't release a build just for that though, not many people get up to T:19 yet.
FYI: It's a 100 Power Ice attack, applies the same Chill almost all other Ice stuff does.
Re: Bloodthrist. The Tower's broken up into 3 "tiers, each of which has certain balance guidelines. For ferrety reasons I'm not willing to describe all of it, but some of them, for example are:
Tier 1 (floors 1 to 10): Single target attack limit: 70 Power, AE or cannot miss attack limit: 55 Power, Rank 1 modifiers.
Tier 2 (floors 11 to 20): Single target attack limit: 85 Power, AE or cannot miss attack limit: 70 Power, Rank 2 modifiers.
Tier 3 (floors 21+): Single target attack limit: 100 Power, AE or cannot miss attack limit: 85 Power, Rank 3 modifiers.
Obviously these are guidelines and not rules: Huo Shu appear on Tower 2 and have an 85 Power attack.. but it is melee and relies on more stats than normal since it is Slash/Fire. Generally speaking, if there are exceptions to these, they usually come at a cost of some kind. But, this does verify your feeling about Bloodthrist. As you get higher in the tower, attacks get stronger (and not just at the same relative rate HP grows), so Bloodthirst will become more effective as you go.
Eternal Glory may need a buff, but I was so spooked about the ability I wanted to err on the side of caution at first. The cooldown is definitely slow: it basically requires full clearing 9 dungeon floors to come back once used. Main thing I'm afraid of is making it good enough where it becomes "required". There are too few ability slots for me to go around letting that happen.
Congrats again on the first T:20 win.