Boon of Erupting Spellpower
Source: Arcana Unleashed
Epic Boon Feat (Prerequisite: Level 19+, Spellcasting or Pact Magic Feature)
You gain the following benefits.
Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 30.
Spell Overload. When you cast a spell that deals damage using a spell slot, you can cause its magical energy to surge. You can treat any 1 or 2 on a damage die rolled for the spell as a 3, and creatures that took damage from the spell also have the Prone condition. Once you use this benefit, you can’t do so again until you roll Initiative or finish a Long or Short rest.