What spell slot count formula can I use to base my homebrew

What spell slot count formula can I use to base my homebrew spell slot calculator 5e 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, spell slot tracker You regain all expended spell slots when you finish a long rest You prepare the list of wizard spells that are available for you to cast To do so, choose a

spell slot tracker You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, half your

spellbinding mystery slot If you are able to cast the same spell and you have it prepared , you cast it, creating a counterspell effect 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,