Twinned Spell: When you cast spell that targets only one creature and doesn’t have a range of self, you can spend # 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 and chromatic orb are.
You create a spectral globe around the head of a willing creature you can see within range. The globe is filled with fresh air that lasts until the spell ends. If the creature has more than one head, the globe of air appears around only one of its heads (which is all the creature needs to avoid suffocation, assuming that all its heads share the same respiratory system).
At Higher Levels
When you cast this spell using a spell slot of 3rd level or higher, you can create two additional globes of fresh air for each slot level above 2nd.