Glass Dunes

{t}: Add {w}, {u} or {b}. At the beginning of the
next end step, you lose life equal to the amount
of colored mana you've spent this turn.
{w}{u}{b}, {t}, Sacrifice a Desert: Choose a color.
Until the end of your next turn, spells of the
chosen color cost {1} more to cast and abilities of permanents of the chosen color cost {1} more to activate. Activate only as a sorcery.