Free assets or those sourced elsewhere
Fireball cast: https://opengameart.org/content/spell-4-fire
Fireball hit: https://freesound.org/people/NearTheAtmoshphere/sounds/683179/
Lightning: https://freesound.org/people/parnellij/sounds/74892/
Ice Hit: https://freesound.org/people/Euphrosyyn/sounds/380493/
Ice cast: https://freesound.org/people/jwb4/sounds/135445/
Water cast: https://freesound.org/people/Yarmonics/sounds/441852/
Water hit: https://freesound.org/people/qubodup/sounds/442773/
Fire Lightning Explosion: https://freesound.org/people/Anomaex/sounds/490255/
Ice Lightning Explosion: https://freesound.org/people/SamsterBirdies/sounds/371123/
Ice Ice: https://freesound.org/people/urupin/sounds/192415/
Spell Drawing Sound: https://freesound.org/people/opticaillusions/sounds/554312/
Completed Drawing:https://freesound.org/people/OwlStorm/sounds/23152/
Error: https://freesound.org/people/Kuru23/sounds/145284/
Death: https://opengameart.org/content/bombexplosion8bit
Skeleton Attack Sound:https://freesound.org/people/saturdaysoundguy/sounds/394179/
Death Zoom in Sound: https://opengameart.org/content/time-slow
Bow twang sound: https://freesound.org/people/Benboncan/sounds/85019/?
Base: https://opengameart.org/content/battle-theme-a
Talking sound: https://freesound.org/people/EVRetro/sounds/524480/