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 幻灭心能
. 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 贪婪的心能单元
on Floor 3 can be useful if you already bought everything from him, as you can get Phantasma via 掮灵钱包
to help you prepare against the final boss fight via having more wares from 掮灵威·诺特
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.