Laurelin and Telperion

{t}: Add one mana of any color in
your commander's color identity.
"In seven hours the glory of each tree waxed to full
and waned again to naught, and each awoke once
more to life an hour before the other ceased to shine.
Thus in Valinor twice every day there came a gentle
hour of softer light when both trees were faint
and their gold and silver beams were mingled."