Elorrenthi's Arcane Echo

You weave strands of twilight, manifesting an image of yourself in an unoccupied space that you can see within 30 ft. A creature that uses its action to examine the image can determine that it is an illusion with a successful Intelligence (Investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the creature can see through the image.

The clone's AC is 10 + your spellcasting ability modifier, and has hit points equal to 3 times your spellcasting ability modifier. When you cast the spell, and as a bonus action on your subsequent turns, you can move the illusion up to 30 feet. For the duration, you can cast spells as though you were in the illusion’s space, but you must use your own senses. Additionally, when both you and your illusion are within 5 feet of a creature that can see the illusion, the creature has disadvantage on attack roles against you and the illusion. An attacker is immune to this effect if it doesn't rely on sight, as with blindsight, or can see through illusions, as with truesight.