Originally Posted by
tyckspoon
It's just spell slots? No reliance/reference to spell or slot level? Forget Sorcerer, be a Wizard. Fill all of your level 4+ slots with (Rary's) Mnemonic Enhancer. Use the 'prepare more spells' version of it to prepare 6 Cantrips per cast. The limits to this are a: the number of instances of Mnemonic Enhancer you can get access to, and b: the time you have to cast it, as the spellslots created by this explicitly fade after 24 hours even if not used. The Rapid Spell metamagic can get around a lot of that, reducing the cast time to 1 minute from 10 and allowing you to pack way more casts into whatever your permitted prep time is.