Village Bell-Ringer

You can use Kiril to copy the trigger to find something.

And so you can get Village Bellringer and Jolly Balloon Man.

And then if you have any creature that taps for mana, your Bellringer untaps your Balloon Man and your creature that taps for mana.

And so then you can just infinitely Jolly Balloon Man your Bellringer to make an arbitrarily large number of 1-1 flyers with haste.