The cards pack pull difficulty was on par with other SAR trainers (~1 in 80 packs), so supply isnt huge
Your main resources to manage are Wonder Hourglass and Pack Hourglass
There is also something lovable about a gigantic Pikachu VMAX tied to hundreds of balloons soaring above an airplane
Its pretty easy to slot Cavern of Souls into your mana base, thankfully, but there are more options from Vexing Shusher to Destiny Spinner
As you celebrate this magnificent milestone, you may discover the mighty presences of Mewtwo ex and Mew ex, or perhaps allies like Umbreon ex, Salamence ex, and Greninja ex
A plus ability will increase the number of Loyalty counters on the Planeswalker, such as Domri, City Smasher's +1 ability giving each creature you control +1/+1 and Haste until the end of the turn