Pyrulea

Pyrulea is an odd plane that Dyfed escorted Yawgmoth to in order to prove her abilities as a planeswalker to him.

Description
Pyrulea is composed of a densely forested sphere around a central star; the plane's inhabitants live on the interior surface of the sphere. What's more, the size of the plant life is particularly enlarged.

""In every direction, a vast rain forest spread. Millennial trees trailed nets of vine and moss hundreds of feet downward to wet undergrowth. [...] North, south, east, and west, the landscape curved up and away into walls. They, in turn, joined to form a ceiling of sky. This was not merely a bowl of land but the inside of an enormous sphere. Despite the vast blue distances, the sky still showed the outline of trees, a living tapestry hanging overhead.""

- The Thran According to this, the plane could be an example of a naturally occurring Dyson sphere.

Bright birds dart among the broad leaves, and strange orchids, with pink petals as vast as a hand and edged in brown, grow here. According to Dyfed, there are also intelligent creatures on this world.

Planeswalker visitors

 * Dyfed