For Kulkov:Spoiler
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Nice! To bad the Miss Chance under cut you. Make a Balance check, DC 10 to stay standing at the top of the round, and give me a percentile roll for that botch.
Kulkov's blow slams into the floor with crushing force. In the darkness, Whether he missed the creature by an inch or a mile is impossible to say.
Murgan slashes blindly with his axe at the dead creature, choosing the attack field least likely to result in friendly contact.
Spoiler
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Murgan attacks Zombie, DC 8: (1d20+3)[15]
Roll 50% Miss chance: (1d100)[68]
If hit, deal damage: (1d8+2)[6]
With a wet thud, his axe finds meat.
For Malthos:
Spoiler
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You can hear whatever flew at you hit the wall and stick there. You've got a good enough idea where it is to make an attack against it, but you'll still be subject to the 50% miss chance, unless you can do something about the magical darkness.