Sorcerer

Sorcerer: Metamagic

From 5th level, you know two metamagic options. You know three option at 10th level and four option at 17th level.

Whenever you finish a long rest, you can replace any metamagic option you know with another metamagic option.

Metamagic

Careful Spell

When you cast a spell that requires a saving throw, you can spend 1 sorcery point and choose a number of creatures up to a number equal to your spellcasting ability modifier (minimum of one creature). A chosen creature automatically succeeds on its saving throw against the spell, and it takes no damage if it would normally take half damage on a successful save.