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They were correct

With Talrand and just a couple of drakes on board, you can cast Mass Polymorph, get all three creatures out of your deck, and start comboing off

In fact, Primeval Titan has been the face behind some of the most degenerate decks in Modern, starting with the Cloudpost deck that was prevalent in the initial days of the format, to the Red-Green Valakut deck, and then the Amulet Titan deck both in its degenerate form with Summer Bloom, and the more toned down version we see today with Dryad of the Ilysian Grove and Urzas Saga

This is, and forever will be (unless WotC gets really crazy!) the best card draw spell in all of Magic