Demon Hunter WC3 ability;
Transforms the Demon Hunter into a powerful demon with a ranged attack (60 range) and 500 bonus hit points.
Temporarily transform into a demon, increasing damage dealt by 24.00%Dark Apotheosis
You imbue yourself with demonic energies, reducing physical damage taken by 13.85%, reduces magic damage taken by 15%, and allows the use of various demonic abilities.
In addition, Soulshatter becomes Provocation which taunts your target, Twilight Ward becomes Fury Ward which will absorb all schools of damage, Shadow Bolt becomes Demonic Slash, and Fear becomes Sleep.
Um, that's exactly what metamorphosis does for Warlocks.For all we know, the DH Transformation could be a resource-fueled ability that enhances all his current ablities instead of giving him new ones.