Thoughts on cards that could/should be replaced:

Condemn - Usually an EDH staple for its ability to mess up generals, not sure if it will remain as relevant in a lower deck size, higher power format. Cant even hit problem generals like Geist. Lifegain may be relevant. 

Plowshares: Lifegain may be relevant, but should be fine most of the time.

Boros Charm - Actually seems terrible here. Double strike is irrelevant aside from a nuts Parish draw, indestructibility is useless against any exile/-X removals, meaning its more often than not just a burn spell here?

Mardu Ascendancy - Probably too optimistic. Unchecked it represents a huge number of additional bodies and the second ability may even help against sweepers so its worth testing.