My map never actually devlared it to be the mimic cave...but if you've found Valgyr's cabin north of the town, the stone of the mountain is kind of like steps down back towards town to the southwest of the cabin itself. the cave is just a bit to the east of the bottom of the 'steps'. Took me a while to find the place- and when I did, I wasn't even looking for the mimic blood, so it took me even longer to figure out what the heck I was supposed to do with it.
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Playing the cutest li'l Chaotic characters since 1996.