Cascade and discover both give you the option of hitting the relevant spell but discover lets you put it into your hand if you dont cast it while cascade puts the spell on the bottom of the library
Apart from Moltres V (which will always be my top pick), there are some different attackers you might want to consider running alongside
Most archetypes have a lot of N and R cards, but their most powerful cards, the ones used to close the game, are usually SR and UR
Being able to finish off the game with what is essentially direct poison damage after the Infect creatures are dealt by opposing removal and sweepers with is a new and potentially powerful line of attack for the archetype, and this doesnt even include the fringe combo potential
The importance of trust in shopping for unopened Pokmon cards cannot be overstated
Next, we have the new Mega Manectric ex, which is a powerful addition to the Miraidon deck