Day of the Eagle

At the beginning of your upkeep, you may pay {r}, then you may pay {w}, then you may pay {u}, if you do then put a 4/4 red white and blue eagle token with flying vigilance and haste onto the battlefield.
At the beginning of your upkeep if you have 1776 eagle creatures on the battlefield you win the game.
"On the fourth day of the seventh month, 'Murcia rose."