And yet people voted Mistcaller as the second best new TGT legendary, only behind Varian Wrynn who also turned out to be not that popular:
http://www.mmo-champion.com/threads/...ard-of-the-set
I'd say the best TGT legendaries are actually Rhonin and Paletress, who didn't get much love in the poll. Rhonin is a big body that has way too much synergy with Flamewakers and Antonidas, I'm not entirely up to date with tempo decks these days but I think most of them run him now. Paletress is less commonly seen but can also prove to turn a game around if you get a bit lucky with the randomness, and its one of those cards your opponent has to kill or he's gonna have a hard time.
As for the Mistcaller, the day I've seen him the first thing I said was that he'd be to slow. Getting all of your minions buffed seems nice on first impression, but it just takes way too long to get that value.