How do Spell Slots work in D&D 5e?

Wizard Spell Mastery & Signature Spells wizards spell slot The spell slots can have a combined level that is equal to or less than half your wizard level , and none of the slots can be 6th level or higher wizards spell slot If the battle lasts 4 rounds , in general the maximum number of spell slots you could

100000 pyramid slot Cleric spells were expanded to 7th level and wizards spells to 9th, creating the spell's level or higher, effectively 'filling' a slot with the spell