Metal can also be a sub of Earth.
Mend should really be less of an element and more of spells from various different elements.
Actually you know what who am I to be giving suggestions on this lol I don't know anything I'm just a bumbling fool
but I will use this list at some point:
Air
Anomaly (Paper, Chaos)
Biological (Animal, Leaf)
Celestial (Stars (Sun), Moon, Gravity, Space)
Chemical (Poison, Acid)
Chrono
Data
Earth (Metal)
Electricity (Plasma)
Ether
Fey
Spirit (Emotion, Heart)
Light (Darkness/Shadow, Illusion, Laser)
Mana
Nether (Fire, Lava)
Psychic (Dream, Illusion)
Sound (Illusion, Thunder)
Ultima
Water (Ice)
Void