I'm reading through DC Archives: Seven Soldiers of Victory Vol. 2, and its interesting to see just how powerful "in :ffvstr: terms" his magic sword is. He repeatedly cuts through tanks (!) and airplanes with one effortless swing. To replicate this in my hero file, I'm giving SK an extreme piercing attack, but I'm limiting the attack to "machines" in his hero file. I don't have any machines for him to fight right now, but when he does....
Also, he has been shown to be able to block both Speedy's and Green Arrow's arrows shot from a very close distance, so some type of PD against ranged piercing and crushing types might be suitable.
FYI
:)
If you have it limited to just vs. machines, an additional step might be making the damage type electrical, so that a lower magnitude attack will do as much damage. Obviously, you would still use an FX appropriate for piercing/sword attacks.
Thats just one of his attacks. He also has "flat of the blade" attacks which do crushing damage. He can use those against anyone.
I like your idea about having an electrical attack. He could really cut down any pesky robots.