Battle: Humanoid Form - The main tank tanks Leotheras the Blind during his humanoid form in the center of the room. This entire phase lasts about 45 seconds. Every 15 seconds, Leotheras does his Whirlwind ability. The main tank then chases Leotheras around the room so that he can pick warcraft gold up as soon as he comes out of the Whirlwind.
During the Whirlwind, melee damage dealers need to back out of the Whirlwind and stop attacking. The tank should be the only melee that takes Whirlwind damage. Ranged casters can keep attacking as long as they stop before he comes out of the Whirlwind. Remember that Whirlwind only lasts for 10 seconds so make sure that damage dealers stop before it ends.
Once the Whirlwind ends, give the tank enough time to reestablish aggro. This usually takes about 5 seconds. Start doing damage after these 5 seconds. Leotheras the Blind does a second Whirlwind after being tanked 15 seconds and then turns into a demon.
The Pull and Position: Pull the three adds that are banishing Leotheras. A tank needs to be on each add and both the tanks and the rest of the raid need to be spread out. They can be tanked along the elevated platform closest to the lights towards the center of the room.