Treat or Trickers

Haste
Whenever Treat or Trickers enters the battlefield, create a colorless Jack-O-Lantern artifact token
with "Remove a Candy counter: Add one mana
of any color to your mana pool. Use this mana
only to cast Squashling creature spells."
Treat or Trickers gets +1/+1 for each Candy
counter among permanents you control.