Metamagic: Empowered Spell
When you roll damage for a spell, you can spend 1 sorcery point to reroll a number of the damage dice up to your spellcasting ability modifier (minimum of one). You must use the new rolls.
You can use Empowered Spell even if you have already used a different Metamagic option during the casting of the spell.
Foundry Note: Once adding this to a sheet, you will need to tell it what resource to consume when used.