Ara, Hiding Beauty

Flying, Shroud, Aetherworld (All other creatures get -X/-0, where X is the number Aetherseeds on the battlefield)
{g}{w}{u}, pay {1} for each Aetherseed in play: Put an Aetherseed on the battlefield.
"Nicol Bolas thinks I'm hiding in Amonkhet. Little does he know, he will never find me there."