The Jolly Balloon Man and Village Bell-Ringer on the battlefield.
You control at least one creature that can tap to produce at least ({1} magic symbol) .
Steps
Activate a creature by tapping it, adding ({1} magic symbol) .
Activate The Jolly Balloon Man by paying ({1} magic symbol) and tapping it, creating a token copy of Village Bell-Ringer that is a 1/1 Balloon with flying and haste in addition to its other types.
When the Village Bell-Ringer token enters the battlefield, it triggers, untapping all creatures you control.