The Cave Of The Fallen

{t} Add {1} or {u} to your mana pool
{t}Put a cave in-counter on this card.
When The Cave Of The Fallen has ten or more
cave-in counters on it, sacrifice it and put a 0/1
with indestructible and "{t} add one mana of
any color " into the battlefield.
I searched for the fallen temple, for the myth
was it was a heaven of treasure.
-John Naheb, Archaeologist