Action Surge

Your Commander is a Warrior in addition to its
other types. Warriors you control have Exert
once per turn: This creature gains +1/+1 until
the end of turn. (An exerted creature won't untap
during your next untap step.) Whenever you exert a creature, creatures you control get +1/+0 until
the end of turn.
"Hit fast, hit hard, and most importantly, hit it until
it dies." — How to Kill Dragon, pg. 23