Grass planet (Time Heist)

A grassy and tropical planet was the adopted home to the Teller and his companion, the last of their species.

Astronomical data
The planet had a mountainous terrain, wide, open grassy plains, rich with fauna, and vast lakes. It had an atmosphere capable of sustaining both human life and that of the Teller's species. In daylight, the planet had a pale, blue sky. (TV: Time Heist)

History
Following their escape from the Bank of Karabraxos where they had been kept and used as slaves, the Teller and his female companion were dropped off by the Twelfth Doctor and Clara on a fertile, grassy planet to begin a new life together. (TV: Time Heist)