A mage’s polymorph can make some instances
Dirty Tricks (4/5) - If you don’t have it, you can be making your grouping life more complicated. It has a few uses in solo play as you can get a good wow gold opener off but it’s in group play that this talent shines.
Rogues sometimes get invites based solely on this talent due to its ability to stun creatures and save you some damage. With instance caps limiting the amount of players, tactics become even more important. Combined with a mage’s polymorph, this can very easily make some instances near trivial. If you do 5man runs, get it. If you don’t, ignore it.
Ghostly Strike (2/5) - You can basically have 15% dodge on command. It’s quite a large gain and if you have this talent, you should be using it all the time when solo. That being said, it’s not a skill you need to have, since it’s useless PvE past level 60 and has very little use in PvP since the Energy can be better spend elsewhere.
Improved Ambush (3/5) - Ambush is a very situational skill and as such any talent that only affect Ambush is a risky one. Sure, 45% chance of critical strike is nice to have but you can only use Ambush once every 30-40 seconds anyhow. All of that considered, combined with Remorselss Attacks, you’re looking at a 100% chance to crit when grinding.