Scourge Warlocks are casters who can summon a Soul Puppet from the beyond, using their magical prowess to leech health and empower allies while leaving enemies as shambling shells. They also have access to a new paragon path, Hellbringer, which... well, it doesn't summon bunnies and stomach rubs. Take a look at the official development blog for a clearer picture of what these casters are capable of, and watch the trailer to see the class in action before Tyranny of Dragons goes live on August 14th.
[Source: Cryptic Studios press release]
Neverwinter: Tyranny of Dragons