Round 308
There are now 7 Brians, the real one plus 6 images.
The muck steps to 60N40E and almost hits himself twice. (Rolled natural 1 twice)
Round 309: Brian steps to 60N35E and hits onces with his scimitar for 10. The muck absorbs some of the damage, so it takes 5 and has 48 hp left. Some of the muck sticks to the scimitar and burns the weapon, but Brian manages to shake it off before it does any damage. (Rolled 20 Ref save) The muck destroys an image - there are 5 left.
Round 310: Brian hits once for 10-5=5. His scimitar survives the acid. The muck destroys an image. The muck has 43 hp left, there are 4 images left.
Round 311: Brian misses twice. The muck hits Brian for 19-10=9 plus 3 acid. Brian has 33 hp left.
Round 312: Brian hits once for 7-5=2. His scimitar survives. The muck destroys two images. The muck has 41 hp left, there are 2 images left.
Round 313: Brian misses twice. The muck destroys an image. One image left.
Round 314: Brian hits once for 9-5=4. His scimitar is destroyed by the acid! The muck destroys the last image, then hits Brian for 20-10=10 plus 2 acid. The muck has 37 hp left, Brian has 21 hp left.