Passage of Eternity

If this is in your opening hand put it into play immediately.
Put 30 time counters on this card. During each upkeep and end step remove a counter. As long as there are counters on Passage of Eternity you have hexproof and cannot lose the game.
{1}: add or remove a time counter. Can be activated by any player.
{10}{t}: exile Passage of Eternity, return all permanents to their owners hands.