Dwarfen Kannonade

Dwarfen Kannonade enters the battlefield with
X canon ball counters on it.
{t}: Remove a canon ball counter from Dwarfen Kannonade. Target creature deals 3 damage.
If the last canon ball counter was removed from Dwarfen Kannonade, sacrifice it. You may
search your library for another Dwarfen
Kannonade and put it into your hand. Shuffle
your library.