I feel like anything above 50% would cause a lot of arguments.
I think.something similar like meeting dodge roll requirements to fully dodge, if you don't them you take the hit based off enemy attack and your own defense.
Perhaps a attack-defend roll, with dodging to power damage?
Perhaps;
attack for 100%, defend 75% of that and then the dodge roll be to whether or not you avoid it entirely, depending on the mechanics. But I've never been a dice man, when it comes to actually making a system
Like their Tilted Tower, where you fight as you run down a tilted tower, I added the catch that you had to stay on the ground so people wouldn't just fly everywhere. Also I based one off of the fight they had in sat or Nadal tornado.
Another one I've fought in was based on columna that fell if you stepped on them a certain number of times.
My favorite arena was one I created for a four way I hosted. Five black blobs that each combatant could change to suit their need. The fifth was kept the same as a neutral ground. Each round it would randomly change to a different blob. only a few things transferred over from each.
Actually no, a friend of mine made that one. I just used it for the four way I hosted. It was really popular.