When Tornado Elemental enters the battlefield, it deals 6 damage to each creature with flying (This creature can't be blocked except by creatures with flying or reach.).
You may have Tornado Elemental assign its combat damage as though it weren't blocked.
The information presented on this site about Magic: The Gathering, both literal and graphical, is copyrighted by Wizards of the Coast.
This website is not produced, endorsed, supported, or affiliated with Wizards of the Coast.