You don't have to lose a card from your opening hand like Gemstone Caverns
In the mainline Pokmon games, Prinplup is known for its role as a starter Pokmon when players select Piplup in titles such as "Pokmon Diamond," "Pokmon Pearl," and "Pokmon Platinum." This starter status affords it a special place in the hearts of players, as it is often one of the first Pokmon to accompany trainers on their journey through the Sinnoh region
The Emperor, Hell Tyrant (Yawgmoth, Thran Physician) Yawgmoth, Thran Physician is a Modern staple (there's a whole deck named after him), so the Emperor art would be a nice addition to die-hard fans of the deck
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Among Holo Rares, two specific treatments tend to be particularly valuable in many modern sets: Pokball Holos and Master Ball Holos
That's amazing in going wide brews or stuff with loads of permanents like Voltron or Planeswalkers