They Have Studied the Blade

Whenever a Samurai or Warrior you control
attacks alone, you may put +1/+1 counter on it,
then if it has three or more +1/+1 counters on it,
you may exert it, if you do, remove it from
combat and it fights another target creature. (An exerted creature won't untap during your next untap
step.)
"Nothing personnel kid"