Empower Rune Weapon

Empower Rune Weapon is a level 57 Frost death knight ability that allows the death knight to empower their rune weapon, effectively resetting the cooldowns on almost all their abilities and enabling many Runic Power abilities as well. Predictably, this ability is not affected by, nor does it trigger the global cooldown.

Curiously, this ability does not require a melee weapon, unlike its name suggests.