Earth's Mightiest Heroes Mite Vial Smasher deals damage equal

Vial Smasher deals damage equal to that spell's mana value to that player or a planeswalker that player controls

You may cast creature spells of the chosen type from the top of your library

If it's a noncreature

Whenever you attack with Merry and another legendary creature

Earth's Mightiest Heroes Mite Vial Smasher deals damage equalTeamwork 5 (As an additional cost to cast this spell, you may tap any number of creatures you control with total power 5 or more.) Reveal the top eight cards of your library. You may put a creature card from among them onto the battlefield. If this spell was cast using teamwork, put any number of creature cards from among them onto the battlefield instead. Put the rest into your graveyard.