Wellspring of Purity

Cumulative Upkeep - Gain 1 life. (At the beginning of its controller's upkeep, that player puts
an age counter on it, then sacrifices it unless he or she pays its upkeep cost for each age counter on it.)
Creatures you control have indestructible.
If your life total becomes 20 or more, you lose
the game.

"Drink too much and you will transcend this world."