If you control no monsters in your Main Monster Zone: Each player sends the top 2 cards of their Deck to the GY (or as many as possible, if less than 2), then, if you sent at least 1 card to the GY, and have 3 or more Spells in your GY, you can shuffle all your opponent's monsters from the Extra Monster Zone into the Deck.
If your Commander is Akroma, Angel of Fury, you may cast her face down from the command zone
Such an effect alleviates the fact that the archetype can potentially thin the Deck very quickly, especially if the controller is successful in consistently utilizing the common effects of the Flip monsters, while also enabling the controller to re-use the Flip effect of a "Krawler" monster
Also I have a problem with " these cards were very likely released as giveaway promotions on a smaller level after the release of Red and Green" you need to back statements up like this with real sources
Much like Ripjaw Raptor before it, this 5/5 flyer with first strike delivers you two impulse draws per turn and also gives you a 3/1 red Dinosaur token if you exiled a land or a Treasure token if you exiled a nonland