When I first started playing, we got three sets spread out throughout the year, all taking place on the same plane with similar mechanics throughout
The Mindskinner comes with very unusual stats 10 Power and only 1 Toughness, making it extremely vulnerable
Gatebreaker Ram becomes very large, very fast, and chews up blockers once you get a couple of gates down
Armarouge is the most frequently pulled by a wide margin SIRs: Mega Chandelure ex, Misty, Gladion's Final Battle, and Mega Darkrai ex (114/081) the set's top chase, pulled from a single community box (and from a single box only, despite ~21 boxes opened) MHR: gold Mega Darkrai ex (118/081) pulled once (our Round 2, Box 1)
Mewtwo VSTAR I am not sure about Mewtwo VSTARs impact in the metagame, especially in a post-rotation format, but you can never be too sure with Mewtwo because it has always been one of the strongest Pokmon in the game