Ruins of Olathoë

Ruins of Olathoe enter the battlefield tapped.
{t}: Add {c}
Dreamland —Whenever you control a creature
with Shadows, instead add one mana of any color.
—
"Thereafter, on the cloudy nights when I could sleep, I
saw the city often; sometimes under that horned moon,
& sometimes under the hot yellow rays of a sun which
did not set, but which wheeled low around the horizon".
Polaris—H. P. Lovecraft