Blessing of the Traveler

This spell costs {4} less to cast if your devotion
to blue, red, and green is equal or more than
seven.
Whenever you cast a creature spell, look at the
top card in your library. If it's a sorcery,
instant, or enchantment, you may cast it without paying its mana cost.
"My gift is freedom for those who wish to serve, and secrets for those who cannot keep them."