Hesed of the Black Anvil Guild:
your aim to find
Yin's Enigmatic Trace can be found in Spiculas 3,4,5 and 6, Twosword Golems, Screw Golems, Light Golems, and Broken-bodied Golems but you can only get Yin's Trace from Yin Spiculas, Spicula Elite Guards, and Spicula Elite Soldier.