Question from a healer

[Fiosha_Maureiba]

For later on, try not to cast Regen on the tank before or during a pull. It works strangely in this game in that every tick of Regen generates enmity towards the WHM, so if a tank uses a ranged attack to pull a bunch of mobs you'll notice them all immediately lose interest and head your way.

Once the tank has used Flash or similar AoE ability it's fine.

Seconding this so much. Try to avoid using Regen on the tank toward the end of the fight. If they run into the next group of enemies, factoring in some shock factor and lag, the enemies AoE enmity will not snag the enemies in time and they'll be on you.