Phantasmal Asphyxiation

Your target must succeed at a Int Saving Throw or believe it can no longer breathe. An affected target must attempt a Constitution Saving Throw each round at the beginning of its turn. On a fail the target loses his ability to uses its action. On the end of the target turn they can reroll there Int Save. If the target cant brake the illusion before its Con mod + 1 rounds it fall unconscious and the spell ends. After 1 min the target regains conscious.

This spell has no effect on creatures that don’t need to breathe.

At higher level: When using a spell slot over 4th, you select another target with in range.