Does anyone know what the new +15% evocation aug is called, or where it drops? I've only seen the +div and +alteration ones so far
CotF currently has four zones, each zone has a zone-wide drop that can come from any rare spawn in the zone. Since all four zones have their rares accounted for (EK/BW/4G have spec augs, DH has life steal clicky), it is very likely that the evocation aug isn't in-game yet and will be the zone-wide rare for an upcoming zone.
Hmm, I never saw the aug in Beta (or on live for that matter). Also, on Beta the aug wasn't named on the crafthalls vendor list, which means it very likely was not used in the initial CotF content release. I'd expect it (as well as the 1 hander damage aug) to make an appearence in the next content release.
I've killed quite a few Neriak named and seen a few +Alteration augs, but never +Evocation. Are you sure you aren't mistaken?
Evocation is not in game yet. Only 3 of the specilization augs are currently live. Tome of Manipulation (Alteration) from N4th Relic of Foresight (Divination) from WK Bixie Summoner's Stone (Conjuration) from Bixie -- And then yes, as previously stated, DH drops Melee Lifetap Click but ONLY in the Heroic Adventures. Static named don't drop it.