Unlike EX Pokemon, which were usually Basics regardless of if they're evolved or not, M Pokemon still needed to be evolved onto an existing EX Pokemon to play M Rayquaza EX, you needed a Rayquaza EX in play to evolve
With a solid 70 damage, this can be enough to take down some unevolved Basic Pokemon
The arguments for the five Moxen are easy, and you don't need to even mention their price tags
PSE Prismatic Secret Rare Armed Dragon Flash X SPELL Quick-Play Special Summon 1 Level 3 "Armed Dragon" monster from your Deck in Defense Position
So, we need a Pokmon that helps feed Infernape its Fire-type Energies, which would be Moltres EX
They seem like a cousin of a Krenko, Mob Boss deck, spamming out more and more Braniacs, only now we get access to Black