Engrave Cloak - Overheat
Engrave your cloak with the Overheat rune: Fire Blast will always deal a critical strike, can be cast while casting another spell, and is not affected by the global cooldown, but its cooldown is increased to 15 sec.
Engrave your cloak with the Overheat rune: Fire Blast will always deal a critical strike, can be cast while casting another spell, and is not affected by the global cooldown, but its cooldown is increased to 15 sec.