Champion of Redline

Commander creatures you own have "Whenever
this creature crews a Vehicle, put a +1/+1
counter on this creature. Then that Vehicle gains
haste and has "You may exert this creature as it attacks. When you do, it can only be blocked by creatures with haste and it deals combat damage
as though it is commander damage until end of
turn." (An exerted creature won't untap during your
next untap step.)"