While it is face-down, everything on the front face is ignored, and its instead only treated as a 2/2
With the online prices varying so drastically, its probably not worth stockpiling Happy Meals just to resell the cards, but finding the holo Pikachu card could turn a $30 to $40 profit and selling any of the others could definitely cover the cost of the Happy Meal
Storm Storm is a mechanic that demands you cast a lot of spells in a single turn, and youll need a bunch of mana to cast that many spells
Radiant Chraizard numbers as likely going to be a strong secondary card to help keep the field active as you're searching for your aces
Guiding Ariadne - The main reason why you're still alive, even after activating all that Counter Traps, although we're not really using Counter Traps that pay LP for cost, so the only thing this card will mitigate is the discard cost to maintain card advantage
He will also attempt to summon Red Dragon Archfiend, who has 3000 ATK and an effect that destroys defense position monsters