Trying to solo this on my Death today (or maybe I'll find a team already through team up but if nobody is there!). Full on pierce blades (death spear...
I suppose that is something we would do but I'm not completely sure either because it really depends on what the other members of this supposed group...
The thing about being able to attack even without being chosen as long as you have the 100% blade from a previous attack is false. I tried it today....