As long as it's your turn, Mounts and Vehicles you control have hexproof (This permanent can't be the target of spells or abilities your opponents control.).
Whenever a Mount or Vehicle you control attacks, put a +1/+1 counter on it.
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.