Mobilize

MTG Mechanic

The number after mobilize indicates how many tapped and attacking 1/1 red Warrior creature tokens you'll create as the ability resolves. Once mobilize triggers, it doesn't matter what happens to the creature that attacked. You'll create the tokens even if that creature is no longer on the battlefield as the ability resolves, and you'll sacrifice the tokens at the beginning of the next end step even if that creature isn't around at that time.