Madlands is a rare Land card from Mystery Booster 2 (MB2), collector number 614. Current market price: $0.26, TCGplayer market prices via Scryfall.
Madlands enters the battlefield tapped. {T}: Add {B} or {R}. Madness {0} (If you discard this card, discard it into exile. When you do, play it for its madness cost or put it into your graveyard. You can play a land only during your turn and only if you have an available land play remaining.)