Man the Cannons

{1}{r}, {t}: Man the Cannons deals damage equal to
the number of vehicle artifacts you control to target creature or planeswalker.

{2}{r}{r}, Sacrifice Man the Cannons: Each opponent chooses an artifact they control and sacrifices it.

"But there's a fire navy ship out there sir. One of
our own. What if it's hit?" -Soldier
"So be it. It belongs to a traitor." -Commander Zhao