So with a tier 4 or 5 win in Ceizak grounds on Dwelve Field NMs, you get a key item to buy the weapon with 30k Mweya Plasms and they arethe Rare/Ex versions ones, not the craftable NQ/HQ ones tho!
Dimmet scythe : http://wiki.bluegartr.com/bg/Dimmet_Scythe
Bearever greatsword : http://wiki.bluegartr.com/bg/Bereaver
Imagine Entropy and Resolution with those...
Rest of the items can be viewed here too: http://wiki.bluegartr.com/bg/Category:Delve