Mecha-Torbran

Mecha-Torbran can be your commander.
Double strike, indestructible
Sacrifice a creature: Add {w}{b} to your
mana pool, then Mecha-Torbran becomes
an Artifact Creature until end of turn.
If a vehicle or red source you control would deal
damage to an opponent, it deals that much
damage plus 2 instead.