So, Cade uses dream-stuff to replicate Revenance on Raoul, which should allow me to cast Revivify on him once he's down again. And since we don't want to stick around here for 10 minutes to allow some nightmarish abomination to descend on us, Raoul needs to go down again quick.
I couldn't resist giving RJ a chance at some payback.
Once he's down, Cade will then replicate Revivify.
Revenance DC is 22, which Cade auto-succeeds on. (His bonus is +22, so minimum roll is 23)
Revivify DC is 25. Lucid Dreaming:
1d20(8)+22=30