7-level Conjuration
You reach out into the multiverse and summon a shadowy echo of a willing humanoid you touch, an alternate version of it from an alternate timeline that never happened. The echo appears within 30 feet of you, has its turn immediately after you, and follows your verbal commands. It cannot speak but does understand all languages the original does. It has the same Armor Class, proficiencies, and ability scores as the original does. It has a quarter of the original’s hit points and the same basic weapons that the original does (for example, if you have a magical +3 longsword, it simply has a longsword), all weapon attacks being considered magical for the purpose of overcoming resistance and immunity to non-magical attacks. It knows all spells the original does.
The echo remains for the duration or until it casts a spell.