lucky spell slot
Wizard - 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.).
Artificer Multiclassing and Spell slots - forums.giantitp.com
Some spells require Spell Slots of a certain level, like the 2nd level Scorching Ray needing a 2nd Level Spell Slot or more to work, and not being able to be cast with a 1st Level Spell Slot.
PoE More Than Skill - Path of Exile
PoE More Than Skill The More Than Skill Ascendancy Passive Skill causes your chance to Block Attack or Spell Damage to be Lucky if you’ve Blocked Recently.