Hypercharge Mana Cannon

At the beginning of your upkeep, add 1 charge counter on Hypercharge Mana Cannon.

{t}, remove 1 charge counter: deal 2 damage to target creature.

{t}, remove 2 charge counters: deal 2 damage to all creatures target player controls.

{t}, remove 3 charge counters: deal 5 damage to target player and 3 damage to all creatures they control.