Life Tap

Life Tap is a Warlock spell that converts health into mana. It is somewhat of a signature ability of the Warlock.

Life Tap is available at level 5 for.

Strategy
This spell has a big impact on how to play warlocks.

A Warlock in a party with a healer can boost his or her mana if the healer agrees. Note that the self-inflicted damage will rank low on the healers priority list - after the tank, and party members taking aggro.

Between fights, use Life Tap to bring your life and mana even. This way, you will regenerate both hp and mana at the same time, and will decrease your downtime.

While Life Tap will allow you to continue casting, it does trigger your GCD, reducing your overall DPS, and should be used sparingly.

Note

 * Life Tap does not generate any threat.