Undertale Souls

The mod adds souls and some things from the game undertale. For the soul you need to kill monsters like zombies and skeletons to get the souls of monsters.

Red soul - does nothing
Orange soul - gives strength depending on health
Yellow soul - gives speed if you do not run
Green soul - gives protection if saturation is full
cyan soul - gives two yellow hearts if you sneak
Blue soul - gives jumping ability if you run
Purple soul - gives protection at low hp

to make a soul you need to knock out a monster's soul from a monster like zombies and skeletons
then by pressing RMB the soul can be repaired (3 attempts are given for this) then you need to put the soul in the middle on the workbench, Glowstone Dust on both sides and the material of the color of the soul you want on top and bottom.
then you will have to press RMB again to repair the soul (5 attempts are given for this) then insert the soul by pressing RMB.