Gishath, Sun Dinosaur

Gishath, Sun Dinosaur costs {1} less to cast for each Dinosaur you control.
Vigilance, trample, haste, first strike, lifelink, menace, reach, ward {2}
Whenever Gishath, Sun Dinosaur deals combat damage to a player, reveal cards from the top of your library until you reveal that many Dinosaur creature cards. Put all of those Dinosaurs onto the battlefield and the rest on the bottom of your library in a random order.