With 323 barfire and 87% MDT (give or take with +2 body) i still get hit for 30 dmg in the air. The barfire actually doesn't matter tbh, I get hit for more dmg when I take off the MDT gear and put on fire resistance, so I just stick with full MDT/MDB set instead.
I think before 25% you could stay alive /dnc, maybe, but after that with the 400 dmg crits unblocked you'd be in trouble.
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