Krelkiar

When Krelkiar comes into play, choose a
color. All Legendary spells of the chosen
color cost 2 less mana of the chosen color
to play.
Sacrifice a legendary permanent: Add an
amount of mana of any one color to your
mana pool equal to that permanent's
converted casting cost.
"Krelkiar loves you. Krelkiar loves you to death"
~Krelkiar