Superior Siege Weapon

Reach, Hexproof, Double Strike
This creature can't be blocked by walls.
{t}: Fire 90 kilogram projectile up to 300 meters.
{t}{r}: Fire 90 kilogram flaming projectile up to
300 meters.
{t}{b}: Fire 90 kilogram diseased carcass up to 300 meters.
{t}{b}{r}: Destroy target wall.