This is a case enchantment, which means you need to fulfill the second condition of controlling no skeletons, make it to your end step to solve the case, then unlock access to the final part during your next turn
Here are a handful of useful cards that require you to discard, so you need cards in your hand to use these to the fullest: Born to Drive, Team Avatar, or Abolish
As a 4-mana card with at least 3 keywords and a significant resistance, she is a good body to keep on the board, besides her Corrupted ability, which steals cards from each opponent with 3 or more Poison counters, and gives us recursion through our opponents' decks
Gengar (Dated 2021) Trick or Trade 2022, Promo 057/198 Gengar makes up for it though, as a properly sinister-looking Pokmon
Afterward, there will be a cut off the top record-holders (approximately the top 1/8 of participants) where players will play best two out of three matches and the loser gets eliminated (standard tournament bracket style), with an eventual winner
We wont add Brine Elemental for the pickles lock, since thats not our style of game