Whenever you do use your particular action to make dash, you can also use a bonus action for simply making one melee weapon attack or else to be shove a creature. Suppose, if you’re moving at least 10 feet in a straight line immediately before taking this specific bonus action, of course you either gain a +5 bonus for the attack’s damage roll (if you would choose to make the melee attack and also hit) or else push a target up to almost 10 feet away from you (if you’re select to shove and you succeed)
You can also read its similar feat called elemental adept 5e now.