Bouncing Bomb

Bouncing Bomb enters tapped and with 2 BOOM counters on it. As long as Bouncing Bomb is tapped, at the beginning of the next players turn they gain control of Bouncing Bomb.

As an additional cost to tap Bouncing Bomb, pay mana equal to the amount of BOOM counters on it.
{t}: Remove a BOOM counter from Bouncing Bomb.

{x}{x}: Put X BOOM counters on Bouncing Bomb. (Anyone may activate this ability.)