On Floor 3 and Floor 6 (and floors 9, 12, 15 and 18 on Twisting Corridors), you will find a Broker who sells you Anima Powers and special items for your Phantasma
. However, that's not all as the Broker will have a Blue Bubble around them which allows you to change your talents and gear.
In normal wings, using the Ravenous Anima Cell
on Broker Ve'ken
on Floor 3 can be useful if you already bought everything from him, as you can get Phantasma via Broker's Purse
to help you prepare against the final boss fight via having more wares from Broker Ve'nott
on Floor 6. However, DO NOT DO THIS ON TWISTING CORRIDORS!
In Twisting Corridors, the Brokers appear in more than one floor, and killing one early on will make it so it doesn't spawn for the rest of the run.