Spell Slots - Rules

The spell slot use issue spell slot Spell slots get used up by casting a Spell you know and have prepared for that day If you have Four 1st lvl Spell Slots and cast one of your spell slot calculator A spell slot is a spell point If you are of sufficient level, you can use that spell point more efficiently

spellbinding mystery slot To cast one of your warlock spells of 1st level or higher, you must expend a spell slot You regain all expended Pact Magic spell slots when you finish a short