Its seen play in nearly every competitive format, was good in Standard and Pioneer, has seen some potential in Legacy alongside Buried Alive, and was a dominant force in Modern
While youll need to be wary of artifact removal, Black Crystal should fit nicely into the majority of black decks in Commander
Swords to Plowshares (T1, Ext, S, Block) Black and red are both known as being the colors of creature removal, so it's ironic that Swords to Plowshares should be hands-down the most powerful single-targeted creature removal card in all of Magic
For a small cost, it makes your opponent mill seven cards, packing quite the punch
One of the most rewarding types of Magic: The Gathering decks to build are Kindred ones
#2 Ob Nixilis, Captive Kingpin Set: March of the Machine: The Aftermath Increase: +$16.48 Current Market Price: $18.22 This version of Ob Nixilis spiked for the same reason as the Showcase version (Valgavoth, Harrower of Souls), but as the lower-rarity version, it had further to grow