How To Use Split Cards Split cards are useful because of the variety of options they can give you
In terms of power, it's average, but in the grander deck of Mono-Black Devotion, it has a lot of applications
If you speak to the people that actually work in the industry on the retail or e-commerce side of things, they will tell you that the buying and selling of collections on retail margin, or the purchasing and sorting of bulk collections, are much more reliable and profitable avenues than the purchase of sealed product, or individual card speculation
If we can drop a Breaker of Armies onto the field with Purphoros' Sneak Attack ability, Alena will let us turn that into mana so we can play an Eldrazi Titan or some other giant creature
It single-handedly revitalized those decks into competitive lists labeled as 8-cast and has done an incredible job since being released
Recently, Wizards of the Coast (the makers of Magic) started selling small sets of cards with custom art as well