[quote=Demensia]
I think it's more likeLevel One SwordEtra One: Skyslash: The character jumps high into the air, and twist his body, the revolutions as he falls causes a edge sharp shockwave in the area he lands.Etra Two: Retaliation: Upon being swung at he immediately makes a counter attack at the opposite side of the opponent (attacker swings left, you swing right meaning neither of you are being blocked but both are attacking.)]ETC.
[/quote]

You have the right idea, but I would see Skyslash as more of a fisticuffs ability. If you wanted to modify that into a Sword Weaponry ability, you could just tweak it so the energy provided by the user's revolutions are gathered in the sword, and by striking the sword into the ground, a shockwave is caused.

^Just so you know, this is an example of me suggesting modifications for your etras to be accepted!