Yes, However bonds of faith will be effective on him and he can still recieve counters from mikaeus and gavony, and is still buffed by mayor. so Mirran is still amazing in this. I can't believe I considered taking him out.
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if aiming for mono white then excellent work I wouldn't be able to suggest any changes.
Switch your ghost quarters for 4 Gavony Township, and switch 7 plains for 4 Razorverge Thicket, and 3 sunpetal groves and switch ur contagion clasp for tezzeret's gambit (switch 2 plains for glacial fortress if you don't like the 2 life drop) FTW!!!!
My roommate runs a deck much like this and its a pretty good deck. i did notice you have it showing that ur running 5 lightning bolts. that might be a typo but it can't be more then 4. the full moons rise are decent cards but you could run 2 huntmaster of the fells instead the moonmists alone are enough to help the whole damage thing. ranger's guile is good but i feel it would be better to run more burn instead. also, if you switch ur lightning bolts out for incinerates your deck would be standard. also your devils play flashback is way to costly to have as a mainboard. i would suggest switching those out for garruk relentless.