So what exactly is a spell slot anyway?

Spell Slots - Rules wizard spell slot The Wizard table shows how many spell slots you have to cast your wizard spells of 1st level and higher To cast one of these spells, you must wizard spins slot machine Spells cast from scrolls do not consume spell slots when cast, nor do most spells granted by magic items Level 0 spells are called cantrips,

wizards spell slot A simple,vertical spell slot tracker for use with spell-casting characters in D&D 5e You can easily keep track of the spells you have