A little fire goes a long way. — Cerripha Sunstreak
Combustion is a mage ability learned at level 77 for those with the Fire specialization. It mixes fire damage with a short duration stun. Additionally, it grants a DoT if the target is under the effects of [Ignite] and also resets the cooldown of [Inferno Blast].
Use: Permanently teaches you this glyph. Increases the direct damage, the duration of the damage over time effect and the cooldown of Combustion by 100%.
Sell Price: 1
Patch 5.1.0 (27-Nov-2012): Combustion's periodic damage is now based only on the current Ignite, instead of both Ignite and Pyroblast. Damage has been increased to bring it up to approximately the same level as before.
Patch 4.1.0 (26-Apr-2011): Combustion no longer has a global cooldown.