Arm the Soul Bombs

Arm the Soul Bombs enters the battlefield with nine planeswalker counters on it.
{x}, Remove three planeswalker counters from Arm the Soul Bombs: Exile target planeswalker you control, then return it to the battlefield with X loyalty counters on it.
Remove a planeswalker counter from Arm the Soul Bombs, Sacrifice a planeswalker: Exile target permanent.