Lava Tubes

This land doesn't untap during your untap step if it has a depletion counter on it.
At the beginning of your upkeep, remove a depletion counter from this land.
{T}: Add {B} or {R}. Put a depletion counter on this land.

Pro Tour Collector Set

Ice Age

If there are any depletion counters on Lava Tubes, it does not untap during your untap phase. At the beginning of your upkeep, remove a depletion counter from Lava Tubes.
oc
T: Add o
B to your mana pool. Put a depletion counter on Lava Tubes.
oc
T: Add o
R to your mana pool. Put a depletion counter on Lava Tubes.