Nakathra, Purveyor of Sails

Flash
When Nakathra, Purveyor of Sails enters the battlefield, the next time an artifact would enter the battlefield this turn, exile it instead. If that artifact was a Vehicle, put a vigilance and trample counter on Nakathra. If that artifact was legendary, put two +1/+1 counters on Nakathra.
Nakathra seeks a sail so bright it could pierce the darkness of Sulbein's deepest depths.