In most cases, these cards are played with their front side up and transform whenever certain conditions are met
In practice, shuffling once is sufficient, but effects that care about you shuffling your library (like Psychogenic Probe, for example) will see that you've shuffled twice
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7 Void Rend Is A Terrific Removal Spell In Esper Colors Esper-colored decks, or white-blue-black, often focus on artifacts and use instants and sorceries like Fabricate and Demonic Tutor to find strong cards for artifact synergy, but such decks also need interactive spells like counterspells and certainly spot removal
Fierce, sharp, and just a little bit dangerous