Upcaster

Spellcaster Feat (Prerequisite: Level 4+, Spellcasting feature)

You gain the following benefits:

Increase Intelligence, Charisma, or Wisdom score +1, to a maximum of 20.

You can expend two spell slots of the same level to create a spell slot that is one level higher and immediately use this spell slot to cast a spell that you know or have prepared.