Zero-Level Characters, Part 3: Magic-Users, Continued
As you may have guessed, my musing on zero-level magic-users is based upon Old School concepts. These are appropriate cantrips (again, from AD&D’s Unearthed Arcana):

I concur with Aaron the Pedantic that Attack Cantrips Are The Worst. I do like modern systems’ inclusion of ritual casting. A practical definition of spell slots is the special preparations for when you need to cast a spell in a time-constrained situation. Every spell should be castable via multi-minute ritual—perhaps even attack spells. Being able to throw a Fireball or Lightning Bolt at a castle every 10 minutes is not that far from gunpowder siege cannon.