The thought process is "oh, I've been losing to Raffine, Scheming Seer out of Esper or Corpse Appraiser out of Grixis, Zenith Chronicler seems like the perfect card to punish those three-color decks," but the issue with this is not considering how the games actually play out and how those decks are usually Constructed
Here's your likelihood of getting items from this slot in the first Play Booster: 87.5% A common from the main set 9.38% A common or uncommon normal reprint from The List 1.56% A rare or mythic rare normal reprint from The List 1.56% A Special Guests card from The List Slot #810: Uncommon Cards These dedicated uncommon slots are exactly as they were in the Set Booster
During your opponents next turn, if this Pokmon is damaged by an attack (even if it is Knocked Out) , put 10 damage counters on the Attacking Pokmon
Chained Throatseeker Chained Throatseeker is a good mid-game infect creature to cast because the 5/5 big hitter can only attack if at least one of your opponents have one or more poison counters
Now, grading Pokemon cards seems relatively new