Winter Orb
Fourth Edition — rare
Artifact
Winter Orb rulings:
2016-06-08: All permanents untap during a player’s untap step at once. If Winter Orb is tapped as your untap step begins, your lands will all untap.
2016-06-08: You can’t tap Winter Orb just because you want to. Another ability, such as that of Glare of Subdual, must instruct or allow you to do so.