While MTG Arena used to be limited in its formats, its really grown since its release in 2019
He packs 5 Life and a powerful end-of-turn effect: Kid flips the top card of your Life face-up, then restands one of your Supernovas characters (cost 38) and gives it Blocker until the end of your opponents next turn
Dragons are universally enjoyed at the table powerful but fair, dramatic but not oppressive
It's nasty good here and in many other places
The same is true about ramping, something like Utopia Sprawl (or Crop Rotation might fit better lol) is incredibly efficient, it can be played turn 1 in many games and if it's drawn late it's literally mana neutral, making it a 'free roll' in decks that can count on having a Forest early
This particular card was part of the first-ever set printed, hence the 1st edition label, but it also features a printing error