This reminds of playing 4e (or was it 5e?) when it just came out - the 2 basic healing classes were cleric and warlord.

I loved to joke that while a cleric would have to appeal to a higher power to literally knit your wounds together my dwarf would shout “rub some dirt on it!” And it would have exactly the same effect.

Gritty, low magic, character death, in game racism… are you sure they first game isn’t the old war hammer pen and paper tabletop?

It’s artifact level - a cantrip simply doesn’t work on it. When the players ask why, you just tell them they don’t know - neither does anyone in the town/city whatever they’re in.