I myself really like to play tron in many different ways, but I always think it is difficult to play cards with more than 1 colored mana symbol in its cost.
If you can feel this too, you might want to swap at least
Wrath of God to
Urza's Ruinous Blast (which also does hit other cards besides creatures). Since you play a lot of legendaries you might get a one-sided board wipe sometimes.