For a hard magic system[0] in the fantasy genre, I'd heartily suggest any of Brandon Sanderson's novels. My favorites are the second set of the Mistborn series

For a hard magic system[0] in the fantasy genre, I'd heartily suggest any of Brandon Sanderson's novels. My favorites are the second set of the Mistborn series (Wax and Wayne), the Stormlight Archives and the Rithmatist. [0] https://brandonsanderson.com/sandersons-first-law/ https://brandonsanderson.com/sandersons-first-law/