A super for arc 3.0 hunters could be an arc sword that they wield to release a large slash of arc light either horizontal if they're on the ground or vertical if they're in the air maybe followed by a chance to strike enemies with lightning after the slash. I was thinking of how you might do arc 3.0 with just the arc staff but then this came to me, hope it's useful in any way! P.S it would look cool on the arc 3.0 ornamental armor too 👌