The Greatsword of Adaption is a weapon that can drop from some resistance adaption enemies.
Like most Greatswords, the Greatsword of Adaption is quite big and heavy.
When an enemy is hit with it, you gain one of their damage resistances for 20 seconds. This resistance changes and the clock resets next time an enemy is hit, unless they have no damage resistances.
- Original Poster (Couldn't find the actual post, but I am pretty sure it's Aara's. Probably deleted it.)