Bumi, Unleashed (TLA 348)

Legendary Creature — Human Noble Ally • Mana cost: {3}{R}{G} • Avatar: The Last Airbender • Mythic

Trample
When Bumi enters, earthbend 4.
Whenever Bumi deals combat damage to a player, untap all lands you control. After this phase, there is an additional combat phase. Only land creatures can attack during that combat phase.

Illustrated by Brigitte Roka.