Time-Eater Dedrogon

Vanishing 3 (This creature enters the battlefield with
three time counters on it. At the beginning of your
upkeep, remove a time counter from it. When the
last is removed, sacrifice it.)
When Time-Eater Dedrogon enters the battlefield, tap all lands. Those land don't untap
during their controller's next untap step.
When Time-Eater Dedrogon leaves the battlefield, untap all lands you control.