Reckoner Bankbuster has exactly one charge counter on it.
Mana Needed
({2} magic symbol) available.
Steps
Activate
Reckoner Bankbuster by paying ({2} magic symbol) , tapping it, and removing a charge counter from it, causing you to draw a card, create a Treasure artifact token and create a 1/1 Pilot creature token.
Activate
Coretapper's first ability by tapping it, putting a charge counter on
Reckoner Bankbuster.
Activate
Ashnod's Altar by sacrificing the Pilot token, adding ({C} magic symbol) ({C} magic symbol) .