WASD to move

left click on spells in inventory to place into magic circle

right click on spells to open upgrade menu

left click on upgrades to place into spell upgrade menu

Assets used: 

https://assetstore.unity.com/packages/3d/props/low-poly-gems-245515

https://assetstore.unity.com/packages/package/157762

https://assetstore.unity.com/packages/3d/characters/humanoids/fantasy/battle-wiz...

https://assetstore.unity.com/packages/3d/environments/fantasy/rpg-tiny-fantasy-f...

https://assetstore.unity.com/packages/3d/characters/creatures/rpg-monster-partne...