Mechanical Dragon

{t}: Bury all Permanents of the Colour Mechanical Dragon has.
{1}{w}: Mechanical Dragon Becomes White.
{1}{u}: Mechanical Dragon Becomes Blue.
{1}{b}: Mechanical Dragon Becomes Black.
{1}{r}: Mechanical Dragon Becomes Red.
{1}{g}: Mechanical Dragon Becomes Green.
"A Dragon is not an ideal pet." -Alexa