Later in the game, the impact of this card is reduced a bit, since just one mana probably won't make that big of a difference on turn fifteen or more, but the explosive early game it can provide is impossible to ignore
Haven of the Spirit Dragon works for any color dragon deck, and Cinder Glade benefits from having basic land types to work in conjunction with Game Trail
This is a 5 mana card that essentially draws you two cards, so one card less than something like Jace's Ingenuity or Precognitive Perception, both of which were already playable
By framing the decks strategy around those two abilities youll strike a balance between swinging in and gaining life or digging through your deck and generating mana
It encourages players to play Wizards, Fighters, Rogues, and Clerics, but also asks them to play them in equal proportion, which prevents them from hitting the required density for most tribal effects