Do you know what would be rad?

If the anabasis spell EBOTS flagged BLB as being 'holy' for purposes of working with Divine Radiance's damage amplification. We could expand on the idea by adding a heavy offensive buff that would consume any active Siphon Vitality barrier. Amplify the damage with a second cycle of holy/radiant/fire damage - I imagine it like a sorcerous backlash but with more sacrificial blood parasites igniting themselves.

We could utilize our perform cut to apply a quasi-profane bless on a weapon/brawling, adding radiant damage at the cost of some spiritual health with a nod toward Cleric's communes but more self-inflicted pain.

Really, perform cut needs love across the board for every State of Being. Even if it's only cantrip-esque flavor.