Threefold Sun

Create two 3/3 green Dinosaur creature tokens with trample.
Dinosaurcycling {r}{g}{w} ({r}{g}{w}, Discard this card: Search your library for a Dinosaur card, reveal it, and put it into your hand. Then shuffle your library.)
The opening of the golden city reveals the enormous elder dinosaurs, which were held in stasis during Orazca's long hibernation in the earth.