Pokmon TCG Pocket's Mythical Island expansion brings new cards including Mew ex Having new cards to collect is no longer a myth
For the additional content, the Ursula's Return Illumineer's Trove sticks to the revised approach of the Into the Inklands version, which cuts the game tokens, deck boxes, and player's guide of the first two versions in favor of some other options
Unlike the previous Double Masters set, we're not getting the infamous $99 VIP booster pack
While opening booster boxes is a ton of fun and sealed product is essentially for drafting, if your goal is to put together a specific Standard deck or simply grow your collection, there is much less variance if you simply buy the individual cards you need rather than hoping to beat the odds and open them from a booster box
Unless you're facing lots of artifacts I'd recommend playing Go for the Throat instead
Notable Cards You dont see Game Changers in precons all that much, but Aura Shards is in this list