My money's on Ampharos, since it surely has more fans, but since we're bound to see all 48 of the Mega Evolutions (information courtesy of our 'How many Pokmon are there?' guide) over the course of the Mega Evolution series, perhaps the Pokmon Company will want to space them out
Tricky Terrain has a lot going for it, especially with the backup landfill strategies
Yes, All Will Be One is a key card in 5 combo(s) in our combo database, linked from the Combos section of this page
Cloud & Sephiroth standee (WPN Premium stores only) : Place this life-size standee prominently near the entrance of our store or in another high-visibility area
One 60-sheet deck (60 cards) * Due to the nature of the construction deck, there are multiple identical cards
Which booster pack you pick up is up to you, and I think everyone will develop their own way of enjoying the game