Vigilance, trample, haste
Whenever Gishath, Sun’s Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order.
If you have fewer cards in your library than the amount of damage Gishath deals, you reveal the cards you have. Because you're not drawing cards, you don't lose the game.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.