The Battle of Coruscant

At the beginning of your upkeep, put a 2/2 white Clone Trooper creature token or a 2/2 colorless Battle Droid artifact creature token onto the battlefield.
Whenever a creature you control with power 2 or less leaves the battlefield, each player loses 3 life. You gain life equal to the life lost this way.
"This is where the fun begins!" - Anakin Skywalker