A foil-stamped Signature Art card replaces the Art card in 5% of Set Boosters, and a card from The List replaces the Ad card in 25% of Set Boosters.
Not only does Ugins Binding depict the planeswalking Dragon using the same process that bound the Eldrazi to Zendikar, but it is also a pretty impressive card
If a buyer can remember the set from one image and one chase lane, the article and product card have a much better chance of converting later

Here are all the confirmed cards in the set: Related Bulbasaur, Ivysaur, and Venusaur Charmander, Charmeleon, and Charizard Squirtle, Wartortle, and Blastoise Caterpie, Metapod, and Butterfree Weedle, Kakuna, and Beedrill Pidgey, Pidgeotto, and Pidgeot Rattata and Raticate Spearow and Fearow Ekans and Arbok Pikachu and Raichu Sandshrew and Sandslash Nidoran (female), Nidorina, and Nidoqueen Nidoran (male), Nidorino, and Nidoking Clefairy and Clefable Vulpix and Ninetales Jigglypuff and Wigglytuff Zubat and Golbat Oddish, Gloom, and Vileplume Paras and Parasect Venonat and Venomoth Diglett and Dugtrio Meowth and Persian Psyduck and Golduck Mankey and Primeape Growlithe and Arcanine Poliwag, Poliwhirl, and Poliwrath Abra, Kadabra and Alakazam Machop, Machoke, and Machamp Bellsprout, Weepinbell, and Victreebel Tentacool and Tentacruel Geodude, Graveler, and Golem Ponyta and Rapidash Slowpoke and Slowbro Magnemite and Magneton Doduo and Dodrio Seel and Dewgong Grimer and Muk Shellder and Cloyster Gastly, Haunter, and Gengar Onix Drowzee and Hypno Krabby and Kingler Voltorb and Electrode Exeggcute and Exeggutor Cubone and Marowak Hitmonlee Hitmonchan Lickitung Koffing and Weezing Rhyhorn and Rhydon Chansey Tangela Kangaskhan Horsea and Seadra Goldeen and Seaking Staryu and Starmie Mr

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