The jumbo packs not only do have better pull rates per card, but also 4x the amount of cards, resulting in significantly higher chances to pull a Pikachu AR
Strangle It's no Lightning Bolt by any means, but Strangle is another example of a card thats good because it does a similar job to its predecessor
Yugioh RA04-EN292 - Heavymetalfoes Electrumite - Platinum Secret Rare - - Quarter Century Stampede
It's also the going rate to reanimate Atraxa, Grand Unifier in Standard (see: The Cruelty of Gix), so the front side of Invasion of Tolvada seems fairly priced
Finally, 12 forests and 12 plains leave a lot of room for more powerful or impactful lands to be played, which feels like an obvious starting point for upgrades
Ghalta and Mavren will discover 12 when it comes down, and then each time it attacks youll have the opportunity to discover 12 again