However, it was solid, and in fact, we did see it show occasionally on its own merits, such as in the sideboard of some control decks
Which promos will hold their value
Black adds Bitterblossom, Zealous Persecution and Sorin, Solemn Visitor to the token strategy, but more importantly adds discard in Inquisition of Kozilek and Thoughtseize to interact with your opponent early to either stop their gameplan or strip away the sweeper effect they intended on using on your wide battlefield
Once a creature exiled this way returns, it's considered a new object with no relation to the object that it was
The reason for this is mainly that since the printing of Ragavan, Nimble Pilferer, Dragons Rage Channeler and Murktide Regent the tempo archetype reinvented itself in being primarily blue-red and making Deaths Shadow not a necessary creature for tempo shells anymore