Especially in the context of earlier mentioned Stoneforge Mystic, a tier 1-1.5 Jeskai Blade shell might still be unexplored which gets to play all premium cards in blue, white and red
This is a good sign for his prospects in Standard, since the best Gods in the past have been ones that can start attacking on turn four (Thassa, God of the Sea and Hazoret the Fervent)
Trading away bad cards for fresh ones gives you a significant advantage, but this has a huge benefit over your average wheel: You choose which cards to keep and which to ditch
Sure, the front side is a nonbo with Niv, but it's great with Yorion, Sky Nomad, which is often used as a companion, and Niv or Omnath can flip the battle in just one attack
If you still want to take advantage of some explosive, if not situational, mana options, you could look at Carpet of Flowers