Cloud makes every creature a potential MVP
First and foremost, it is the non-rotating format that sees the most play by a significant margin, so a change to the mulligan rule in Modern impacts way more people than it would in Legacy or Vintage
Green black opens us up to some great single target removal in [Card]Abrupt Decay[/Card], [Card]Assassins Trophy[/Card], [CArd]Windgraces Judgment[/Card] and [Card]Casualties of War[/Card]
That number originates from the fact that each and every winner was given a specially made promotional card, the Illustrator, featuring the flagship Pokemon Pikachu with a paintbrush
For example, it might be smart to keep a Pokmon with an ability in your hand until you intend to use it
From the perspective of Standard, End Hostilities has the potential to be a format-defining card