Sorcerer Supreme [TTWR]

You are no longer restricted to how many meta magic options you can use on a single spell. When you take a long rest you may change one spell learned to another spell you can learn. You can now cast two leveled spells in a turn, as long as one takes a bonus action to cast, and you gain a new way to use metamagic. When casting a sorcerer spell, you may expend an amount of sorcery points equal to your charisma modifier to deal an equal amount of extra damage dice. When all targeted creatures succeed on a saving throw from one of your spells, the spell slot is not expended.