Why Trainers Matter: Trainer cards often get overlooked initially but can become highly valuable as sets age
Splinter Twin I'm not going to spend too long talking about why Splinter Twin was banned, mostly because I wrote an entire article discussing the topic (you can read it here)
Leader Roger , with 9,000 Power, means hes going for a massive swing and can be tough for attacks to go through during your defensive turn, forcing the opposing player to shift their strategy, either focusing only on developing the board or sacrificing board development to boost their attacks and threaten your Leader
Yes, it will give you nine power worth of Golems for only five mana, which is a deal you're not likely to find just about anywhere
This means that you're roughly four times as likely to see a given Aether Revolt Common, Uncommon, Rare, or Mythic as you are to see a given Kaladesh Common, Uncommon, Rare, or Mythic
Decks that like to buff a lot of smaller creatures and win by swarming their opponents will also appreciate this effect, as Anthem effects (cards that boost the power and toughness of all creatures) can mean a 1/1 may be a 3/3 or bigger