Thren Felhorn from Shadowdance . # s Turns his son into the perfect almost mindless and emotionless killer , so much so that his first kill was his brother at the age of eight . Is willing to destroy an entire city just because he wouldn ' t be able to control it , and is totally merciless and absolutely cruel . <| sep |> Irrational fears aren ' t fueled by facts <| sep |> Look at a not too old card , on the type line where it says Basic Land Forest . The fact that it has Forest after the dash means that the land implicitly has the ability T Add G to your mana pool in addition to any other abilities that may be actually printed on it . Same goes for the other basic land types Island , Mountain , Swamp , Plains and their corresponding colors . If you look at Blighted Fen ' s type line , it just says Land . No basic land types after a dash in fact , there is no dash at all . So Blighted Fen has no implicit abilities . You can tap it to add one colorless mana to your mana pool , but only because that ability is explicitly printed on the card .