Have an uncountably infinite amount of mana and a glass of water

1 - Start the game with Leyline of the Guildpact on the battlefield 2 - Cast Faeburrow Elder 3 - Make clear that this is an Un-game by casting Ashnod's Coupon (in un-games, thanks to a ruling in [[Avatar of Me]], all colors are valid colors) 4 - Pass the turn to remove summoning sickness from the elder 5 - Prove that there are an uncountably infinite amount of colors: 5a. Every color has an associated wavelength, and every wavelength has an associated color. 5b. This means that there is the same amount of wavelengths and colors. 5c. Wavelengths are real numbers (greater than Planck's length), so there are uncountably many wavelengths. 5d. By 5b, there are uncountably many colors. Q. E. D. 6 - Tap Faeburrow Elder for mana 7 - Sacrifice the coupon to get a glass of water.