I'm going to walk through the talent tree

In the event of a raid in a raid, they'll basically take you off the threat day because everyone else will be above your level, yet you'll continue making threats. If they do go away and you return to where you were before but don't have any protection, you will not be able to defend yourself and the boss won't be attacking you.

So it's a great time to apply it at an early stage of bosses right prior to the poll, or also an AoE. If you are aware that tank you're using won't be able to keep aggro on a lot of mobs, and they've just pulled the big pull, you can pop the mirror images go ham on AOE and know that you're not going to pull on a girl.

Now I'm going to walk through the talent tree and some of the changes going from TPC to Wrath Lich King for each of the different arcane talents in addition to some of the different arcane abilities that you can take advantage of. However, before I do that, I'll cover the biggest change for arcane. There has been a change in the Arcane Blast and the debuff it gives.

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