For some reason, while reading this thread, a flavor idea hit me for Desna's faith. You know how they use Blessed Quartz Dust instead of Holy Water?
What if their potions were similar? Not a drink, but more of an anointing thing, pouring it over yourself instead of chugging it. This doesn't exactly necessitate a mechanical change, though, but...:
Samuel blinked at the vial in his hands, holding it up to the light and turning it slowly. "What am I supposed to do with this? I asked you for a healing draught, not some old dust!"
"It is the way of my faith." Dorin said, one hand idly playing with his orange scarf. "You merely open it, and pour it over yourself. The Lady's blessing will do the rest."
The fighter still gazed at it uncertainly, but decided to take the Varisian's word for it. He unlatched the lid and poured it, and the black sand interspersed with ground quartz swirled around him, almost glowing near his bandaged wounds. There was a rush through him, and he almost swore he could see a butterfly at the edge of his vision - but it was merely the dust playing tricks with his eyes.
As the sands and quartz settled on the ground, their magic spent, Samuel unwound the bandages to reveal sealed wounds, though some scars remained near the worse ones. "Well what do you know, the dust worked."
"Of course it did." The rogue said, rolling his eyes. "You never should have doubted me in the first place."
