Destruction

Unlike other Warlocks, who delight into the slow and painful suffering of their foes, those who command the power of destruction favor incantations of pure chaos and excessive aggression in battle. In this regard, Destruction Warlocks would probably find themselves more in a kinship with Fire Mages than other Warlocks – if not for their propensity to make use of magic deemed detestable by all mage orders. Destruction Warlocks are versed in discharging an array of shadow, fel, fire, and chaos magic upon opponents, that rattle their souls and conflagrate their bodies. They require little motivation for the havoc they wreak, happy to delight in the opportunity to watch the world burn around them.

 

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WoWhead Destruction guide

http://www.wowhead.com/destruction-warlock-guide

Icy Veins Destruction guide

https://www.icy-veins.com/wow/destruction-warlock-pve-dps-guide

Noxxic Destruction guide

http://www.noxxic.com/wow/pve/warlock/destruction/