It comes with: A storage box (The Trove itself) 2 deck boxes Likely simple cardboard like The First Chapter 8 Booster Packs 15 Game Tokens A Players Guide The Players Guide that comes with the Trove (if its like the first) will have an overview of the lore, a few highlighted cards, some strategy, and then some cool combos
A key thing to remember is not to be wasteful
You block the Wurm with your Colossus
If you were to lose due to poison counters, you would immediately lose as soon as the ability resolves as you still have 10 poison counters
Each ACE SPEC card fundamentally changes your strategy: Prime Catcher lets you target the opponent's Bench Pokemon, Maximum Belt adds 50 damage to attacks against Pokemon-ex, and Hero's Cape adds 100 HP to a Pokemon
It's a unique take on a theft deck, letting you choose the cards (in most cases) that you're stealing by taking them straight out of your opponents' hands to cast them later