The one downside, albeit small, is that Dragons Rage Channeler is much more aggro-orientated than other threats that are usually played in tempo decks
Feedback Gateway is a "board game-ified" version of Disney Lorcana and serves as an ideal introduction to learning the game's rules
Bouncing every one of your opponents permanents can be extremely valuable depending on what youre playing against (such as, for example, Mono-Green Food or Gruul Adventures), and bouncing your own permanents can also be quite good, especially since some of the Giants-centric cards are Sagas (or potentially Yorion, though unfortunately thats not an infinite combo)
Honorable Mention #2 (#14 Overall) - Prahv, Spires of Order AND Pentagram of the Ages I love this duo in multiplayer formats
Once this flock of Chocobos gets up to speed, its hard to stop them
However, you have the added benefit of access to both abilities simultaneously, meaning that you can draw a card and play an additional land