So dungeons difficulty 7 rooms 5, 7, etc... are suppose to give t2a shards ranging from 500-18000 as per the information we have been given.
After running and completing room 7 I got 200 from room 5 and 400 from room 7.


Ignore the fully formed one, I was short about 500 t2a shards for my next fully formed one. I currently have 66 t2a shards.