Trixie's Ephemeral Decoy

You momentarily create a shadowy decoy of yourself in response to incoming, turning invisible and teleporting to a spot within 60 feet of you that you can see. If you are outside of the attacks range or spells effect, you take no damage and suffer no additional effects. If an attack rolled triggered the casting of this spell, the attack rolls target the decoy instead. The decoy has 1 hp, immunity to all conditions and uses your saving throws for its saving throw. Once it takes damage, it detonates and deals 3d8 force damage to all creatures within 5 feet of it.

At Higher levels: Whenever you cast this spell with a 4th level slot or higher, the damage increases by 1d8 for each slot level above 3rd.