Underground Sea, for example, can sell for as much as the cheapest Power Nine card
Most of the time, I suspect well see the normal play line of flashing it in at the end of turn of the player on your right so as to protect it from sweepers and whatnot, and then just going to town
Entering the battlefield with four loyalty, Sarkhan's +1 adds one mana of any color to its owner's mana pool whilst drawing its controller a card
Caution isn't just thrown to the wind, it's pitched at full speed with a crooked smile
You can also cast Zacama, Primal Calamity on the cheap and still untap all of your lands to have access to even more mana to use to cast Dinosaurs or activate Zacamas abilities
Whenever you cast an instant or sorcery spell during your turn, flip a coin