Decks live or die by their consistency. So whenever Wizards makes a functional reprint to an existing card or effect, it's worth paying attention—eight copies means you can essentially guarantee drawing that effect at some point in every game. Even boosting the consistency of unremarkable effects can spawn entirely new deck archetypes.
The Rack + Shrieking Affliction = 8-Rack
Goblin Bushwhacker + Reckless Bushwhacker = 8-Whack
and now, Pride of the Clouds + Skycat Sovereign = 8-Cat!
Load up on Healer's Hawk Spectral Procession, throw in some Empyrean Eagle Favorable Winds and a Judge's Familiar of Declaration in Stone, and you've got yourself a tempo deck that's far more competitive than its price would suggest.