Guide to Rotface

Health:

• 10 Man: 7.32M
• 10 Man Heroic: 10.458M
• 25 Man: 36.257M
• 25 Man Heroic: 47.413M

Abilities:

• Ooze Flood - The Ooze Flood inflicts 5363 to 5637 damage every 1 sec and reduces move speed by 25% for 5 sec..
• Slime Spray - Raining Green Ooze. Deals 5363 to 5637 Nature to enemies in cone. 1.5 sec cast / Channeled - Deals 6338 to 6662 Nature damage to enemies in a cone infront of the enemy. Instant
• Mutated Infection - The Mutated Infection inflicts 3900 to 4100 damage every 1 sec and reduces healing receieved by 50% for 12 sec. After the Infection is removed a small ooze is created at the target's location. Instant

Little Ooze: Spawned each time Mutated Infection is cleansed / expired

• Sticky Ooze: The Ooze sprays a puddle of Green Goo near the target. The Green Goo inflicts 2925 to 3075 damage every 1 sec and decreases move speed by 50%. 1 sec cast
• Weak Radiating Ooze - The Radiating Ooze inflicts 3413 to 3587 damage to enemies within 10 yards every 2 sec, it will also cause the Little Ooze to merge with other nearby Ooze.

Big Ooze: Spawns with the first Sticky Ooze, a Sticky Ooze can merge with the Big Ooze and adds a stack of Unstable Ooze. Two Big Oozes can merge and combine their stacks. When the Ooze reaches 5 stacks it will explode.

• Unstable Ooze - Increases damage dealt by 20%. Instant
• Sticky Ooze - The Ooze sprays a puddle of Green Goo near the target. The Green Goo inflicts 2925 to 3075 damage every 1 sec and decreases move speed by 50%. 1 sec cast
• Unstable Ooze Explosion - Inflicts 9750 to 10250 damage to enemies within 6 yards. 4 sec cast
• Radiating Ooze - Inflicts 4388 to 4612 damage to enemies within 10 yards. Instant

The Fight:

Ooze Flood

First thing of note is the room. Every so often, an entire quadrant will be flooded with ooze, which of course hurts you and snares you.

Ooze will start flowing from the pipes there first before the flood, so can watch for that and get out of there. The 4 quadrants will be randomly filled, but each one must be filled at least once before re-randomizing.

So, the tank should tank Rotface in the center, the ooze won't reach the inner inner circle of the room. The raid can all stack up there too, in normal mode at least.

Ooze Flood

First thing of note is the room. Every so often, an entire quadrant will be flooded with ooze, which of course hurts you and snares you.

Ooze will start flowing from the pipes there first before the flood, so can watch for that and get out of there. The 4 quadrants will be randomly filled, but each one must be filled at least once before re-randomizing.

So, the tank should tank Rotface in the center, the ooze won't reach the inner inner circle of the room. The raid can all stack up there too, in normal mode at least.

Mutated Infection

This would be another major mechanic. What it does is puts a DoT on you, and the debuff also serves as a Mortal Strike effect. When it expires, or cleansed, it will spawn a small ooze which will be attacking you.

Little Ooze

Spawns when Mutated Infection is cleansed, and will be attacking you and spewing out a small damage aura. Let it, it won't hit that much, and has an immense threat lead so it won't go away until you die, or do some total aggro drop.

When 2 of the Little Oozes get together, they will merge to form a Big Ooze. Your goal is to take that ooze out of the raid so they do that.

Big Ooze

When 2 small oozes come together, they'll merge into a big one. These guys operate on a normal threat table and can be tanked, though shouldn't. They will hit very hard and should be kited around the room.

Can be kited by any class that can kite, hunters, locks, mages, etc. But likely, you'd want to stick with a tank class for that extra damage / hp buffer. Do ranged threat moves when possible, so obviously, some tanks are better than others for this task.

Meanwhile, people with the Little Ooze should drop theirs near the Big one so they merge with it. With each one merged, the Big Ooze gains a stacking buff that increases their damage by 20%. All the more reason to kite it around, and stay away due to the aura it has too.

Unstable Ooze Explosion

At 5 stacks (oozes merged), the Big Ooze will stop and do a cast and then explode. Sending 8-10 ooze missiles into the air in which they will land where the players are doing a lot of damage.

So the raid is to watch for that and move, it's like a Shadow Crash, it'll hit the location you were at when targeted. So if the raid was mostly all in the center, that's where all the missiles will hit, get out of there.

And that's basically the cycle of the whole fight. Avoid slime spray, get Mutated Infection, take the little oozes out to big ooze, kite the big ooze, avoid the explosion, repeat til dead. Except, the rate of Mutated Infection will increase as the fight goes along, so things can get hectic at the end.

Hard Mode Summary:

More damage, more HP, and Professor Putricide joins the fight from the balcony performing...

Vile Gas: This is similar to the Festergut one, but not as lethal. What it does is roots you for a second or two, you can still cast it and all. And it still hurts people around you. The adjustment the raid has to make is to keep the minimum amount of ranged at ranged (3 / 7) and spread out so it's not cast on the melee pile.

Otherwise it's the same fight, this is a relatively easy Hard Mode, comparatively.