Like most Magic: The Gathering cards, the value of Mountain depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Adventures in the Forgotten Realms)
Generally, there are two kinds of morphs: Those you can use to fill your curve on three and then flip face up with a cost lower than their actual cost and those you can play for their normal cost to act like fairly vanilla creatures, but you have the option to pay more to get some nice effect
This is largely due to the monster effect immunity that Crimson Nova has, making the only standard out to Crimson Nova SPYRAL Gear Utility Wire
Overframe cards are availabl
We have a deck profile that was named Red Demon SDX3 by the person who made it
That lottery is what keeps S11 among the most sought-after sealed products in the modern Japanese card market