To get this Spirit, you must first unlock the Finger Ruins of Dheo, located in Scaduview ... this zone until you find the entrance to a cave. Drop here, and a giant Fingercreeper will attack ...
The Finger Mimic can appear on all three Finger Ruins: the Finger Ruins of Rhia, the Finger Ruins of Dheo, and the Finger Ruins of Miyr. These items appear on the ground in these ruins ...