4. Vaelastrasz

R.I.P Vaelastrasz!

This red dragon drew lots of sympathy from players who had grown friendly with him through various quest chains back in the game's early days. After losing to Nefarian in battle, Vaelastasz is corrupted and forced to fight the raid against his will.

This fight was difficult enough on its own with its large burst aoe damage. The insane part of this fight though is a debuff called Burning Adredaline. Vaelastrasz will randomly target players during regular intervals and hit them with a condition that gives them an insane boost in damage, attack speed, and resource regeneration. That sounds great! Untill your character blows up and dies that is. Burning Adredaline eventually kills your toon and causes a large aoe explosion… Enough said.