Master Caster (5e Feat)
From D&D Wiki
Prerequisites: The ability to cast a 1st level Spell.
You have cast so many spells that you have learned to cast them more fiercely. This grants you the following benefits:
- When you cast a spell that deals damage, you can add your spellcasting ability modifier to the damage roll if you don't already. If the spell has multiple damage rolls, such as the eldritch blast cantrip, you add your spellcasting ability modifier to each damage roll.
- When you cast a spell that allows a saving throw to take no or half damage from the spell, such as the fireball spell or the sacred flame cantrip, creatures have disadvantage on the saving throw.
- Choose one of the bard, cleric, druid, sorcerer, warlock, or wizard spell lists. You learn one damaging cantrip and one damaging spell of 1st level or higher for which you have spell slots from your chosen spell list. Both spells must require either an attack roll or saving throw. Your spellcasting ability for this spell depends on the spell list you chose the spell from: Charisma if you chose the spell from the bard, sorcerer, or warlock list, Wisdom if you chose the spell from the cleric or druid list, or Intelligence if you chose the spell from the wizard list. You can cast the cantrip at will, and you may cast the spell of 1st level higher once. You regain the ability to cast your chosen spell of 1st level or higher when you complete a long rest.