Thaumanova Anomaly is the Doppelganger
Maybe I should clarify since a few people may have not played GW1 the Doppelganger was what looks like pure energy with armor over top.
In Gw1 Prophecies to get ascended you had to face off against the Doppelganger which was a test from the gods and he would copy your skill bar perfectly. This is something the Anomaly does he will steal skills and use them against the party, although not full on copy of skill bar. Also some skills names that could be considered divine empowered …Cosmic Barrage…Cosmic Anomaly…Star Smash.