Just take the 22,630 total unique cards in Gatherer, and multiply that by the number of different printings per card, like the 10 versions of Remove Soul. That gets you to a total of roughly 49,998 total unique printings
Buffing your whole board for two mana is pretty strong
But would you do a lot
Brainstorm Ponder Expressive Iteration Fevered Visions Jori En, Ruin Diver Rielle, the Everwise Firemind's Research Yusri, Fortune's Flame Jhoira, Weatherlight Captian Kraum, Ludevic's Opus Niv-Mizzet, the Firemind The Royal Scions Ral, Izzet Viceroy Squee's Revenge Aegar, the Freezing Flame Rhystic Study Counterspells with a hint of Redirection It's not blue without a counterspell or two
Theres never a bad time to pick up this card and I hope to see a reprint of it in the close future so that everyone has a copy to go with their worse version of it, Bone Miser
For example, one thing I love to do is play just enough creatures out on the board when I think my opponent has both a Supreme Verdict and a Dissolve