I use this build but if you put an riven with critical chance 2x(heavy attacks) instead of [Whirlwind] or something the damage will go up greatly since [Whirlwind] is only used to be able to have alot of momentum to deal damage quicker.

With normal [Fever Strike] and normal [Pressure Point] and only rank 8 on [Sacrificial Steel] I can deal 3 million damage on some enemies and I can go through steel path without any difficulty at mastery rank 10