Basically, its like a Warcraft III Armor/Damage system, like Chaos, Divine, Piercing, etc. except in spell form.

Each character would have different spell types, which would look like one spell, except when activated, would show the spells of that ctaegory.

Some categories for the spells could be

Elemental Categories:
Air
Fire
Water
Earth
Sand

Dark Magic Categories:
Darkness
Death (Can summon undead and spirits)
Blood (Drains the health of an enemy)
Curse (Steals the health of an enemy over time)
Reaping (steals the souls of enemies, having various effects)
Void
Void Description: Void is the most rare category of Dark Magics. It is made when the Realms of the Dead and the Living collide. Void Magic usually creates giant balls of energy which explode. It can also allow the caster to travel between realms, and has a mix of all the other Dark Magic effects.

Light Magic Categories:
Holy
Life (Heals)
Smite (Damages dark enemies)
Protection (Gives allies extra armor and hit points)
Enchantment (Gives allies extra damage)
God
God Description: God is the most rare category of Dark Magics. It is made when th Immortal realms collide with the Mortal realms. God Magic usually consists of changing the time of day, using the Sun to burn enemies, or causing the moon to shatter for a short time, damaging dark magic enemies. It also has a mix of other Light Magic effects.

If you like this system I'll post more about it, or you can add on to it

made a couple changes but post more info on this
elemental categories will prob be more detailed though
like instead of just water, itll be like water, ice, snow, steam, black ice

Dark Magic Categories:
Darkness
Death (Can summon undead and spirits)
Blood (Drains the health of an enemy)
Curse (negative buffs)
Reaping (damage + negative buffs)
Void
Void Description: Void is the most rare category of Dark Magics. It is made when the Realms of the Dead and the Living collide. Void Magic usually creates giant balls of energy which explode. It can also allow the caster to travel between realms, and has a mix of all the other Dark Magic effects.

Light Magic Categories:
Holy
Blessing (all buffs)
God
God Description: God is the most rare category of Dark Magics. It is made when th Immortal realms collide with the Mortal realms. God Magic usually consists of changing the time of day, using the Sun to burn enemies, or causing the moon to shatter for a short time, damaging dark magic enemies. It also has a mix of other Light Magic effects.

Conditions:
Blindness - Makes enemies miss X% of the time (X depening on skill's power)
Bleeding - Makes enemies lose X health over time (X depending on skill's power)
Freezing - Lowers enemy movement speed by X% (X depending on skill's power)
Disease - Makes enemies lose X health over time, is contagious and will spread unlike bleeding (X depending on skill's power)
Hollowblight - Rots the internal organs of an enemy, reducing X armor, due to weakness (X depending on skill's power)
Mindrot - Rots the mind and soul of an enemy, making them unable to think and making them attack X enemy units (X depending on how many enemy units it kills before it dies of rot)

Might wanna change some things, and the spell category names if you decide to use this

Can I implement this magic system and give them spells (Like recommendations you can change later)