The 2-prize duel in the upper room is absolutely brutal since it actually uses a legit strategy and a pretty decent decklist containing Scyther, Wigglytuff, Mysterious Fossil (+random evos)/Clefairy Doll and at least 3 Bill and Oak from what I recall
And players who rely on life gain may find themselves quickly falling behind
As a bonus, Shared Animosity only boosts those creatures' power, so it works well with Skullclamp.
Based on my research and experience tracking thousands of Pokemon card sales, three critical factors determine whether grading will boost your card's value enough to be worthwhile: "The three main components that determine a card's value are rarity, condition, and popularity
Once per turn: You can detach up to 2 Xyz materials from this card, then activate only one of the following effects depending on how many materials were detached: 1: Attach 1 "HERO" Monster from your deck to this card as an Xyz Material
That explains the two broken wine bottles I guess