There are 3 items added in this Soul add-on which are Enchanted Sword, Soul, Staff.
To activate the mob you need to type /function start
Enchanted Sword: when your right click it will put effects on nearby mobs.
Soul– when right click it will clear your soul and you will regenerate your hearts and it will clear the effects.
Staff when you right click it will summon soul protector if the soul protector dies you will not regenerate your hearts
Soul Protector– it’s a very friendly mob it even kills hostile mobs.
Tip: Use SOUL when using the STAFF so when your Soul Protector dies The Soul Item will heal you even you don’t regenerate anymore
To activate the mod u need to type /function start