Where it does shine is in decks that use the graveyard, especially Reanimator builds
I have never been defeated! Illustrated by Yuhong Ding Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Legal Comp
The modes are quite different from each other, too, but giving your whole team hexproof, while maybe slightly over the top as most spells only target a single creature, is a good bit better than just giving hexproof to one of them
It costs 6 mana, and it doesnt do much to advance your gameplan
Luckily their depiction here, as dedicated healers who don't pick sides since they don't believe in true good or true evil but in balance and destiny, doesn't clash to much with what we see of them elsewhere
Amethyst/Steel Starter Deck List Improvements + Cards To Drop Looking at 1-ink cards to swap in is your first priority here