"Dreadwyrm Trance - Applies stacks of Bahamut Aether Which can be spent on various abilities while Aetherflow is on cooldown."

The person doing the stream thats going on right now said he had a Q and A developer show him the Summoner class, and what he SAID was, you use Aetherflow, then after thirty seconds, you could activate Dreadwyrm and it swaps your AF stacks to DW stacks, and you use the DW stacks to cast the Bahamut abilities Deathflare which takes 3 stacks, and another ability that takes less stacks.

All of this devalues dots/fester/bane/tri-diaster etc