Have you ever wanted to use Dark Magic to destroy your opponents? have you ever wanted a simple magic mod in a vanilla style? then this mod was made for you!
to begin your adventure, explore a forest until you find resin, which now can spawn on the ground of most forests.

then craft a nighmare catcher, and after three nights sleeping with it in hand it will break, giving you a piece of cursed amber.

after that, find a sage plant and harvest it, once you've got it, either brew it with a fermented spider eye or put it in a crafting table with a mushroom and a poisonous potato to make some rotten sage.

then make a cursed skull by surrounding a skeleton skull (now craftable by putting a bone block into a stonecutter) with resin and use it to make a cursed cauldron.

this is where the main part of the mod begins.
put any type of raw meet into your off hand and your cauldron in your main hand, then right click to sacrifice the meat to the cauldron.
once your cauldron has had enough sacrifices, you can use it to craft by putting a crafting ingredient in your off hand and left click the cauldron:
Spells:
spells can be casted by using specific items with the cauldron (left click):
the straw doll:
the straw doll is a peculiar item that allows you to curse a mob/player with "omen of harm," which can be activated by punching a pin into the doll (doll offhand pin mainhand).
the curse will deal as much damage as the caster's missing health, or if you use a fanged pin, one and a half times that ammount.
The Dark Idol:
the dark idol is the peak of progression in the mod, it allows you to maintain your extra hearts after death like the resin totem, but unlike the totem it won't disappear afterwards, and you will respawn wherever you last held it.
I suggest using the JEI mod to have full acces to all craftable recepies, and check the advancements for the full progression path of the mod.
if you encounter any bug, please, write a comment about it.
I hope you'll have fun playing!