Dies to Removal

So I've been play testing the UR build a lot against the local meta. Barring a few misplays, it's been performing pretty well. I did add Ratchet bomb to the board which has been doing work against GW. What do you guys think about a UR Master of waves deck? You think it's viable? I like Master and I ...

Hey Guys! I'm a pretty solid magic player who used to play exclusively EDH, but I'm looking to branch out into other formats. I hear you guys know what you're doing so I wanted to pick up some pointers and learn from some of the best.