Outlands Basecamp

Outlands Basecamp enters the battlefield tapped.
{t}: Add {c} to your mana pool.
Madness costs of cards you own cost {1} less.
Discard a card: Add X mana of any color to
your mana pool were X is the discarded card's converted mana cost. Until end of turn, that
mana does not empty from your mana pool as steps and phases end.