Scorpion Grav Tank

{t}, Put a charge counter on Scorpion Grav Tank.
{t}, Remove three charge counters from Scorpion
Grav Tank: Destroy target permanent.
Two pulses you say? Firing at once... Damn. We need
heavier equipment, that can only be one thing, and it
will breach this wall given half a chance.
—Commisar Vangren