This is a very serious competitor to true luck. It might even be better (well, just a little bit). Because all sorts of stuns on militia and shield bashes from armored knights will have a higher chance of working. It should work very well with soldier luck!
But there are questions, namely, how it works with:
1) creatures with cleave (zealots)
2) griffin abilities (strike from the sky and that flyby...)
3) knights under haste (will the second attack also have a bonus from haste, or not?)
Well, something like that. I suspect that in case 1, it will simply give another attack, in case 2 it won't work, and in case 3 there will be no bonus, but it's still interesting!
Perhaps this skill will indeed be more powerful. Or maybe instead of a second attack, something else should be added?
Блистает там воздушностью прогалин.
Но между кедров, полных тишиной,
Расщелина по склону ниспадала.
О, никогда под бледною луной
Так пышен не был тот уют лесной...