Fifth Edition

Sand Silos

Sand Silos comes into play tapped.
You may choose not to untap Sand Silos during your untap phase and put a storage counter on it instead.
oc
T, Remove X storage counters from Sand Silos: Add an amount of o
U equal to X to your mana pool.

Sand Silos enters tapped.
You may choose not to untap Sand Silos during your untap step.
At the beginning of your upkeep, if Sand Silos is tapped, put a storage counter on it.
{T}, Remove any number of storage counters from Sand Silos: Add {U} for each storage counter removed this way.

Fallen Empires

Comes into play tapped. You may choose not to untap Sand Silos during your untap phase and instead put a storage counter on it.
oc
T: Remove any number of storage counters from Sand Silos. For each storage counter removed, add o
U to your mana pool.