Name:Calciform Pools
ManaCost:no cost
Types:Land
A:AB$ Mana | Cost$ T | Produced$ C | SpellDescription$ Add {C} to your mana pool.
A:AB$ PutCounter | Cost$ 1 T | CounterType$ STORAGE | CounterNum$ 1 | SpellDescription$ Put a storage counter on CARDNAME.
A:AB$ Mana | Cost$ 1 SubCounter<X/STORAGE> | Produced$ Combo W U | Amount$ ChosenX | CostDesc$ {1}, Remove X storage counters from CARDNAME: | References$ X | SpellDescription$ Add X mana in any combination of {W} and/or {U} to your mana pool.
SVar:X:XChoice
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/calciform_pools.jpg
Oracle:{T}: Add {C} to your mana pool.\n{1}, {T}: Put a storage counter on Calciform Pools.\n{1}, Remove X storage counters from Calciform Pools: Add X mana in any combination of {W} and/or {U} to your mana pool.