D&D 5e Multiclassing Spell Slot Calculator

What spell slot count formula can I use to base my homebrew spell slot calculator 5e The calculator does not calculate slots correctly when only multiclassing with warlock The warlock class uses Pact Magic rather than being spell slot counter If you are able to cast the same spell and you have it prepared , you cast it, creating a counterspell effect

spell slot tracker For example, if you are a 5th-level artificer, you have four 1st-level and two 2nd-level spell slots With an Intelligence of 14, your list of prepared spells