Four Horse Engine

Summary
Four Horse Engine was a spell designed by Tecumseh, which came about after his magical potential was released by the anger from having his family murdered.

The spell creates three clones of every one of its targets, and the spell can target up to 10,000 living things. The copies will work to achieve the same goal as the original, being fully controlled by them. The clones are exactly the same as the original physically.

It is extremely similar to Reflective Overlap.

Uses
The Four Horse Engine is particularly useful in wars to multiply ones forces. Tecumseh famously used this to win the Battle of Fort Detroit, where he hid his armies in the forest, multiplied them, them emerged with a massive army, scaring the fort into surrendering.