Combustion

Combustion is a mage ability that when activated, instantly deals a low amount of damage to the target and combines all present fire DoTs from the casting mage into a new DoT that deals the same damage per second but lasts 10 seconds. This ability is talent trained, requiring 16 points in the fire tree, making it available only to Fire mages.

Combustion is invaluable in situations where very heavy AoE damage is required. Indeed, it can be spread from one target to all the others through the use of the Fire talent Impact.

Patch changes

 * This ability was redesigned in Patch 1.11. Previously, it increased the critical strike chance of the next fire spell by 100%, only guaranteeing one critical strike.  The cooldown was 10 minutes.
 * This ability was redesigned in Patch 1.11. Previously, it increased the critical strike chance of the next fire spell by 100%, only guaranteeing one critical strike.  The cooldown was 10 minutes.
 * This ability was redesigned in Patch 1.11. Previously, it increased the critical strike chance of the next fire spell by 100%, only guaranteeing one critical strike.  The cooldown was 10 minutes.
 * This ability was redesigned in Patch 1.11. Previously, it increased the critical strike chance of the next fire spell by 100%, only guaranteeing one critical strike.  The cooldown was 10 minutes.
 * This ability was redesigned in Patch 1.11. Previously, it increased the critical strike chance of the next fire spell by 100%, only guaranteeing one critical strike.  The cooldown was 10 minutes.