The flat 85 damage per swing is too strong as it allows for very strong synergies to be created.
But what if instead of a flat damage buff. Rein was given a “combo” system for his hammer. The more he swings away on a target the more “lethal” his hammer becomes.
Live: 75, 150, 225 for 1-3 hammer swings on a target.
W/ Nano: 113, 226, 339
ExC: 85, 170, 255
W/ nano: 128, 256, 384
What if, instead it is:
75 base damage, 80 second swing on the same targets, 90 on a third swing
That gives 75, 155, 245
W/ nano: 113, 233, 368
As you can see, it cuts down his 250 break point back to 3 swings requiring nano but really does increase danger he imposed without him breaking lower ranks completely.
It gives 250 hp heroes a fighting chance.
Meanwhile the nano boost allows him the breakpoint if taking out 225 hp heroes in 2 swings.