Yggdrasil Drive

Yggdrasil Drive does not untap during your
untap face.
At the beginning of your upkeep you get {e}
(1 energy counter) as long as Yggdrasil Drive
is untapped.
{t}Total shutdown: This card has Shroud.
Use this ability only as a Sorcery.
Use this ability only once each turn.
{ut}Reactivate: This card loses Shroud.
Use this ability only as a Sorcery.
Use this ability only once each turn.