Bottomless Vault enters tapped.
You may choose not to untap Bottomless Vault during your untap step.
At the beginning of your upkeep, if Bottomless Vault is tapped, put a storage counter on it.
, Remove any number of storage counters from Bottomless Vault: Add
for each storage counter removed this way.
If the land is tapped by some external effect, no counters are removed from it.