The key distinction between the mythic lands and the others is that the land side CAN enter the battlefield tapped
Its my favorite card and basically the best card in the format and costs like $2, and its in my budget Sliver deck
Instants, sorceries, and casting as many of them as possible every turn
The upside of the mechanic is that you have the ability to build a creature stack to your liking, whether thats making a small one with a cool ability larger or giving a larger one neat abilities
Card Draw Even though the opportunity to double-spell in a Dragon deck will be rare, I still want a good amount of card draw to ensure I hit my land drops each turn as I march towards nine mana and The Ur-Dragon time
If you dont have enough firepower that way, then the ever-reliable Gearseeker Serpent gives you a second source of unblockable inevitability