Tiny Simulacrum

You shape a tiny illusory duplicate of one humanoid that is within range for the entire casting time of the spell. The duplicate is a creature, partially real and formed from ice or snow, and it can take actions and otherwise be affected as a normal creature. It appears to be the same as the original, but it has 10 hit points, is formed without any equipment, and its size is Tiny. The simulacrum uses all the statistics of the creature it duplicates with the following exceptions: it is a construct; it can't cast spells other than cantrips (no matter the source of the spell), it has disadvantage on Strength ability checks and saving throws, and any damage it inflicts-- including cantrip damage-- is halved. The tiny simulacrum's carrying capacity is 20 pounds.

The tiny simulacrum is initially friendly to you and your companions. It follows your spoken commands, moving and acting in accordance with your wishes and acting on your turn in combat. The simulacrum lacks the ability to retain information or become more powerful. It never increases its level or other abilities. Any information it learns (e.g. a creature's name or the location of an object) is forgotten when the spell ends.

As long as it has at least 1 hit point remaining, someone proficient with alchemist's supplies can repair it. Repairing a damaged tiny simulacrum takes 1 hour of work and restores it to its maximum hit points. At the DM's option, repeated casting of the mending during a short or long rest could also restore its hit points.

If you or your companions do anything harmful to it, or if the simulacrum drops to 0 hit points, it reverts to snow and melts instantly. To maintain the tiny simulacrum "alive" for another 24 hours, you must cast this spell on the creature again before the current 24-hour period ends.

You can have only one tiny simulacrum at a time. If you cast this spell to duplicate yourself or another humanoid while your tiny simulacrum lives, the spell fails.