[Terra] feels like a card that was built primarily around Celes, notes u/whitetempest521, and then late in design they decided that it needed to be Terra as the face of the game, and added the trance thing to fix it. Cloud, Ex-SOLDIER Limit Break (Final Fantasy VII) Source: IGN Cloud, Ex-SOLDIER handles the Limit Break precon, centered on equipment (and, safe bet, swords!)
The themes for the four decks are Eldrazi, Jund Graveyard, Urzatron, and Energy
Kamigawa: Neon Dynasty introduced several new card variants at different rarities, making opening many of these special variants exceedingly hard to achieve
Legendary Summit hearkens back to the LEGEND cards of the HeartGold & SoulSilver era, where you needed two halves of them to play the full card
Few cards earn a solid description like this one