Heroic: Scholomance

[olibri1]

Some additional comments on the OP's strats:

Chillheart: Spread out for both phases. Do not stack.

Barov: As long as you don't stand near a wall, gravity flux will kick you out of it, so don't worry too much about it. Again, spread out for this one.

Rattlegore: Group near the center of the room because the fire hurts a LOT. Pick up bone shield when you can, but the more critical thing is to stay far away from the blue flame. I heroism on this boss and pop all cooldowns. Also, Rusting is based on hitting the tank, so use as much avoidance as you can throughout the fight. You can stack near the center of the room if you like.

Voss: When you get dark blaze, I just put everyone on follow and run in a wide circle until it wears off. At one point, you will get dark blaze AND someone will be fixated. When you stop running, choose the one that is fixated and run away. This will give you plenty of time for the next fixate. if she fixates the tank, just eat it. There's no reason to run.

Gandling: Again, I hero and pop cooldowns here. The damage is pretty low. The only thing is that your tank needs to AOE for the zombies that come out. You'll need some awareness here to get your toon back to the right room, but it's not really that hard.