DISCONTINUED I don't intend to continue working on this datapack for many reasons but I will probably still make other datapacks.

RINGS:
-Speed Ring-wear in off hand for speed.
-Jump Ring-wear in off hand and sneak for jump boost.
-Anti Gravity Ring-wear in off hand and sneak for slow falling.
-Invisibility Ring-wear in off hand and sneak for night vision and invisibility.
-Strength Ring-wear in off hand for strength.
SOULS:
-Soul Of The Swift-Dropped by the Killer Bunny Mini-Boss.
-Soul Of Leaping-Dropped by the Slime Prince Mini-Boss.
-Soul Of Anti-Gravity-Dropped by the Phantom Lord Mini-Boss.
-Soul Of The Hidden-Dropped by the Hobbit Mini-Boss.
-Soul Of The Strong-Dropped by the Piglin Knight Mini-Boss.
TOMES:
-Tome Of Earth-Creates a wall of dirt in-front of the user. [​cool-down=1/2 sec]
-Tome Of Water-Shoots a beam of water that slows and weakens anything it hits. [​cool-down=5 sec]
-Tome Of Gusts-Boosts the user into the air. [​cool-down=0 sec]
-Tome Of Infernos-Summons a fireball punch it to send in a direction. [​cool-down=1/2 sec]
-Tome Of Light-Shoots a beam of light that when it hits something it summons lightning {if its alive}. [​cool-down=1 sec]
-Tome Of Shadows-Shoots a beam of pure darkness that when it hits something it blinds,slows,weakens that thing but also makes them immune to damage for 1 min {if its alive}. [​cool-down=60 sec]
RELICS:
-Vampiric Blade-Every few hits it heals the user.
-Gungnir- Shoots a beam of light that withers anything that it hits. [​cool-down=1/4 sec]
-Mythril Mail- Is an unbreakable chain mail chest plate that gives the wearer knockback immunity the protection of a Netherite chestplate and protection 10. [​Droped by the Hobbit Mini-Boss]
-Necrorb- Collects souls by killing an entity and uses them to do the following things. [​each kill is 10 souls or SP]
{-Right click while in main hand to summon a wither skeleton with a netherite sword that will not attack anyone who is holding a Necrorb. [​cost=40 SP]
[-Sneak while in main hand to summon a super fast skeleton horse [​cost=20 SP]
-Right click while in off hand to take on the form of a lich making you physically stronger, fall slower, and grants immunity to frozen time caused by Tempus [​cost=100 SP]
-Sneak while in off hand to enter spectator mode for a limited time[​cost=50 SP]}
-Temus- Right click to freeze time in a radius around you [​cool-down= 60 sec]
MINIBOSSES:
-Killer Bunny-A super fast super aggressive bunny that drops the Soul Of The Swift.
-Slime Prince-A large slime that jumps very far and fast and drops the Soul Of Leaping.
-Phantom Lord-A large phantom that is immune to fire and drops The Soul Of Anti-Gravity.
-Hobbit-A invisible baby zombie that drops the Mythril Mail and The Soul Of The Hidden.
-Piglin Knight-A piglin brute with netherite armor that drops The Soul Of The Strong.
BOSSES:
-Cadmus The Elder-An unfinished boss that can only be summoned by the command /function magicitems:summoncadmus

All of the items including spawn eggs for the mini-bosses can be obtained using the command /function magicitems:giveitems
THIS ONLY WORKS IN 1.16.4