wizard spell slots by level - Fighter - bg3.wiki 888slots bonus code

The Spell must be one for which the Wizard has a spell slot, even if they obtained it by multiclassing (so a L4 Cleric / L1 Wizard can transcribe Level 3 spells).

If a wizard copies itself, the simulacrum has the spell slots the wizard has, though the copy can never regain spell slots.

For example, a Wizard will gain 2 level 1 Spell Slots at level 1. However, for a class like the Paladin, they'll need to reach level 2 first to obtain their first 2 spell slot casts.