Four mana for two tokens, who knows how much energy, and an ability that makes all your creatures meaner and hasty
While this creature isn't much to write home about by itself, its instant speed Adventure, Swift End is a great form of removal for three mana, destroying target creature or Planeswalker at the cost of two life
Said creature is, admittedly, just a 1/1, but the fact that it comes as a free extra alongside a land makes it worth playing in a number of decks, particularly those that can cheat creatures into play, such as Collected Company
While others may need you to survive a turn with your forces before attacking, through this you can flood the board and win in a single turn
If nothing else, you can just copy the draw trigger and get extra cards that way, and the ceiling is much higher