I have a few questions about how the edge mechanic works.

When do warriors start to build edge with skills? I'm low leveled and my Rain of Blows doesnt seem to add the marker under the enemy's health.

Does reaping slash consume edge to deal more damage or does it just deal more damage with more edge? It's base damage at rank 1 is a measly 19 so I see no point in using it once I obtain the skill as Scythe doesn't come until 60.