Illusory Self

When a creature hits you with an attack roll, you can take a Reaction to interpose an illusory duplicate of yourself between the attacker and yourself. The attack automatically misses you, then the illusion dissipates.

Once you use this feature, you can't use it again until you finish a Short Rest or Long Rest. You can also restore your use of it by expending a level 2+ spell slot (no action required).