(Fetid Foundry isn't a spell.)
Fetid Foundry enters the battlefield tapped unless you reveal a multicolored card from your hand.
White and green spells cost more to play.
: Add or to your mana pool.
Sacrifice Fetid Foundry: Add or to your mana pool.
more to play.
: Add 
or 
to your mana pool. or to your mana pool.
