Permanent bonuses - bg3.wiki
From bg3.wiki. ... Spellcasting Level 1 spell slots unlocked: 3 You gain an additional level 1 spell slot. Prepared spells Choose a number of spells = 2 (Cleric level) + Wisdom modifier (Minimum of 1 spell.).
Multiclassing: Slots and Prepared Spells - D&D (2024)
You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, and half your levels (rounded down) in the paladin and ranger classes.
DnD 5e - Expanded Spell Lists for Non-Tasha's Sorcerer Subclasses
These spell slots are listed in the Sorcerer Spell Slots table.