You gain sorcery points equal to half your character level rounded down, and the ability to cast metamagic abilities you have obtained. If you already have sorcery points you gain 4 additional sorcery point instead, as well as the following effects:
You gain 1 of the following metamagic abilities:
Careful Spell
When you Cast a Spell that forces other creatures to make a saving throw, you can protect some of those creatures from the spell’s full force. To do so, you spend 1 sorcery point and choose a number of those creatures up to your Charisma modifier (minimum of one creature). A chosen creature automatically succeeds on its saving throw against the spell.
Distant Spell
When you Cast a Spell that has a range of 5 feet or greater, you can spend 1 sorcery point to double the range of the spell.
When you Cast a Spell that has a range of touch, you can spend 1 sorcery point to make the range of the spell 30 feet.
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 Charisma 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.
Extended Spell
When you Cast a Spell that has a Duration of 1 minute or longer, you can spend 1 sorcery point to double its Duration, to a maximum Duration of 24 hours.
Heightened Spell
When you Cast a Spell that forces a creature to make a saving throw to resist its effects, you can spend 3 sorcery points to give one target of the spell disadvantage on its first saving throw made against the spell.
Quickened Spell
When you Cast a Spell that has a Casting Time of 1 action, you can spend 2 sorcery points to change the Casting Time to 1 Bonus Action for this casting.
Subtle Spell
When you Cast a Spell, you can spend 1 sorcery point to cast it without any somatic or verbal Components.
Twinned Spell
When you Cast a Spell that Targets only one creature and doesn’t have a range of self, you can spend a number of sorcery points equal to the spell’s level to target a second creature in range with the same spell (1 sorcery point if the spell is a cantrip).
To be eligible, a spell must be incapable of targeting more than one creature at the spell’s current level. For example, Magic Missile and Scorching Ray aren’t eligible, but Ray of Frost is.