The magic will add more gameplay and these are ideas for some of the magical abilities.
Necromancy: this allows you to control undead mobs and if the item is heated and put in a potion the mob hit by it will have the effect temporarily. Weakness the weapon that this is used on has less durability.
Blitz placing: this will allow the player to use a block as a weapon and placed and destroyed faster. Weakness the easy to break the block is the weaker the weapon.
Elemental control this will allow the player or mob to use a weapon that can use elements as attacks.
Mob recruiting: this will allow you to alter the behavior of a mob and put items on it. Example ( a iron golem wearing a set of netherite with a iron axe and with a flag on their arm).
These are my ideas and I hope people like them. And I hope you in mojang add more to this.