Xel'Naga Temple

Indestructible
Creatures can target Xel'Naga Temple as if it were a planeswalker to remove Time Counters
{t}: Put a Time Counter on Xel'Naga Temple
{2}{u}{b},{t}: Double to amount of counters on
Xel'Naga Temple
Planetary Purge - At the beginning of your endstep, if there are 30 or less time counters on
Xel'Naga Temple, tap it if it is not already tapped. Otherwise, you win the game.