They're double-sided cards that transform from saga enchantments into legendary creatures
No reprints, useful effects, and brilliant, chiaroscuro artwork from Roger Raupp all combine to make this card one of the top chase rares from Visions in particular and the Mirage block more generally (its the seventh-most valuable card across Mirage, Visions, and Weatherlight)
Also means no chump blocks if you make this your commander, getting to 21 faster
Unless you're printing the same card en masse for some reason, select individual images
Building Miracles The list I played was not perfect, but I would describe it as the best skeletal structure for this deck
It also lets you do battle from the palm of your hand, or on your desktop if you fancy using the PC or Mac version