Kiki-Jiki in exile (exiled by Agatha's Soul Cauldron).
Agatha's Soul Cauldron and Goblin Sharpshooter on the battlefield.
Goblin Sharpshooter has at least one +1/+1 counter on it.
Steps
Activate Goblin Sharpshooter using Kiki-Jiki's ability by tapping it, creating a token copy of Goblin Sharpshooter with haste.
Activate the token Goblin Sharpshooter by tapping it, dealing 1 damage to itself.
The token Goblin Sharpshooter dies as a state-based action due to having 0 toughness, triggering the nontoken Goblin Sharpshooter, untapping the nontoken Goblin Sharpshooter.