MTG Salvation

This is an idea for a modern deck,i have most of the cards so my plan is to buy only the necesary and keep it on a budget.
The deck is a traditional tron ramp to tooth and nail,and it wins with the Emrakul+ Xenagos combo, hitting for 30 in a turn. Just in case problems appear, i have some other utility creatures, Iona against combo, Elesh against aggro, Ashen rider for those dificult to deal with permanents, Platinum angel helps against infect and sundering is a classic. Im thinking about platinum emperion/empyrial archangel against burn

• LANDS
  
• 4 urza's tower
  
• 4 urza's power plant
  
• 4 urza's mine
  
• 4 brushland
  
• 3 forest
  
• 2 plains
  
• CREATURES
  
• 1 Elesh Norn, grand cenobite
  
• 1 Emrakul, the aeons torn
  
• 1 Iona, shield of Emeria
  
• 1 Sundering titan
  
• 1 Ashen rider
  
• 1 Platinum angel
  
• 1 Xenagos, God of revels
  
• ARTIFACTS
  
• 4 Chromatic star
  
• 4 Chromatic sphere
  
• 4 talisman of unity
  
• 4 Expedition map
  
• SPELLS
  
• 4 Ancient stirrings
  
• 4 Sylvan scrying
  
• 4 Tooth and nail
  
• 4 path to exile
  

what do you think? i play mostly casual

I would like to see Karn and Wurmcoil Engine instead of Ashen Rider and Xenagos. Other than that, it looks like fun.

Xenagos and emrakul are the main win condition of the deck, karn is out of budget and wurmcoil,have to try it but if i can get a creature i prefer one that can make me win more quickly