Terrian is a legendary dinosaur ooze from Muraganda.
History
The Fang Druids of Muraganda refer to this mighty terrarium-ooze as the World Tyrant, for it holds a time capsule, an ancient world within its core body, having consumed entire ecosystems as it wandered Muraganda's proteogenic jungles. Some believe that Terrian is larger on the inside than it is on the outside and that if one were to pierce its gelatinous membrane and journey within, they might never escape. To travel toward its core would be to experience the history of the plane in reverse.