Fabled Dragon Eggs

As an additional cost to cast this card, manifest the
top card of your library. (Put it on the battlefield
face down as a 2/2 creature. Turn it face up any
time for its mana cost if it's a creature card.)
{u}{b}{g}, Sacrifice Fabled Dragon Eggs: Search
your library for up to 3 dragon cards, each sharing
a different mana devotion matching one from
Fabled Dragon Eggs. Put one on the field and
the rest into your hand.