This is a simple combo for Extended allows you to repeatedly bounce a very large creature off your opponent’s face for a low mana commitment.
Here’s how it works:
Cast your Ball Lightning or Arc Runner, and when you sacrifice it, activate Mimic Vat’s trigger and exile it. Now you can make a token copy each turn (or save it for blocking, if you need to take out a large incoming creature).
You can add other effects such as the classic Fling or Assault Strobe for extra fun.