Okay, I tried support skadi, Parvati (kscope), Paracelsus (golden sumo), plugsuit Helena to stand in for skadi 2 and non mlb kscope.
W1: Parvati’s quick/gain, philosopher’s stone/arts up and ce starbomb from paracelsus, then switch Helena for battery. Cards: NP, quick crit, Helena buster. Med/large mob weren’t KO, but Parvati’s crit took care of large and Helena killed medium. Np only refund: 43%, refund after quick crit she had 82%.
Tried again with Helena’s tricolor buff, np got 51% and quick crit got her to 94%. So you can possibly get away with only a single skadi buff on T1 with weak enough mobs with paracelsus’s 50% gain, but it will require mlb kscope for Parvati because her self battery is only good for 10% and plugsuit paracelsus prevents use of mages association with it’s 20% battery. Otherwise your using one of the skadi batteries T1 (in my case Helena’s) and will rely on art/quick crits on enemies you didn’t KO to fully refund rather than just reaching the 50% benchmark.
In this node it worked out. I got a crit T1 that got refund in range of self battery for t2. Helena had kscope, so I softened the wave with her np before Parvati, which Parvati KO and refunded 55% despite only 2 enemies, leaving skadi ready to refill for T3, where I got a brave chain that let me 100% refund for a 4th consecutive np that still had a single skadi quick buff.