Magic Capacity is the total amount of magic that Shovel Knight has. Using Relics consumes magic, and Magic Drinks restore it. The player's current magic is displayed as a number at the center of the HUD.
Shovel Knight's maximum magic starts at 30, and can be increased at the Magicist in increments of 10 up to 100. Additionally, the Conjurer's Coat adds 50 extra magic points at the cost of taking double damage, which allows Shovel Knight to have up to 150 magic points.