Name:Fountain of Cho
ManaCost:no cost
Types:Land
K:CARDNAME enters the battlefield tapped.
A:AB$ PutCounter | Cost$ T | Defined$ Self | CounterType$ STORAGE | CounterNum$ 1 | SpellDescription$ Put a storage counter on CARDNAME.
A:AB$ Mana | Cost$ T SubCounter<X/STORAGE> | Produced$ W | Amount$ ChosenX | CostDesc$ {T}, Remove any number of storage counters from CARDNAME: | References$ X | SpellDescription$ Add {W} to your mana pool for each storage counter removed this way.
SVar:X:XChoice
#ChosenX SVar created by Cost payment
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/fountain_of_cho.jpg
Oracle:Fountain of Cho enters the battlefield tapped.\n{T}: Put a storage counter on Fountain of Cho.\n{T}, Remove any number of storage counters from Fountain of Cho: Add {W} to your mana pool for each storage counter removed this way.