Determining the strongest Pokmon cards involves more than just reading the text on the bottom of the card, as competitive strength comes from a combination of several factors
After Mieru interrupts Yuya and Yuzu's touching moment, the kids are all looking very nervous as Yuzu starts to lose it
If all Spell & Trap Zones are occupied or rendered unusable, new Spell/Trap Cards (other than Field Spell Cards) cannot be activated or Set, as there must be a usable vacant Spell & Trap Zone to place the card in (before the activation)
You'll need the basic Pokmon in play before you can evolve it into Ledian
Looking back over the reviews, I am pretty high on the bounce deck cards
Among the sets other notable pickups are the Rare Holo versions of Suicune, Houndoom, Raikou, and Entei