The value isn't great, the playability out of the box isn't great, and the long-term value isn't great, which might just mean that the Golgari Midrange Challenger Deck isn't a great option for most players
Takahashi, one of the most successful manga creators ever, passed away last year while trying to save people caught in a riptide and has been called a hero for it
The first one is nothing special, but the other one can deal up to 200 damage a turn
Orfeo, the Boulder is a beefy boy, doubling the power of one of your creatures whenever you attack
It pumps out massive amounts of damage through the combination of 33 different creature spells or squirrel-token spells, combined with 14 different anthem effects (including chitterspitter, which given enough time can make your team enormously strong on its own)
If you played during the December season, the Archaludon ex deck is also a great option and requires little to optimize