Time-Turner

Time-Turner enters the battlefield tapped and does not untap on your upkeep
{ut}: Skip your next turn.
{t}:Choose an emblem:
-Whenever one of your creatures become tapped, you may untap a land you control
-Whenever you tap a land for mana, gain one life
-Every 3 turns you take resets your life total to 20
"3 turns should do it"