TL;DR cause I have no time right now- will probably add more later I apologize.

1. Umbra Forma not Necessary, you can use a different forma for a different mod polarity to cut Capacity Costs

2. Pair this weapon with the Adaptation mod on your Warframe, which is usually already equipped alongside Rolling Guard for most non-tank frames that are trying to survive HIGHER tier Steel Path enemies or even Level Cap.

3. Corrosive can be replaced with Viral damage