Bottomless Vault enters the battlefield 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.
![Tap](/Handlers/Image.ashx?size=small&name=tap&type=symbol)
, Remove any number of storage counters from Bottomless Vault: Add
![Black](/Handlers/Image.ashx?size=small&name=B&type=symbol)
for each storage counter removed this way.