Dorr, Council of Torment

If a Plains is tapped for mana, it will produce {u} instead, Islands will produce {b}, Swamps will produce {r}, Mountains will produce {g}, Forests will produce {w}.
Spells your opponents cast cost {1} more to cast.
Activated abilities of nonland permanents your opponents control cost {1} more to activate.
Activated abilities of lands your opponents control that are not mana abilities cost {1} more to activate.