Combos Utilizing Dauthi-Cutthroat

Take shadow from your Cutthroat and give it to an enemy creature, then destroy it using the Cutthroat

Use the Embrace to give a creature shadow and play the Cutthroat's ability to kill it off

you give your opponents creature shadow with the trapper, then you kill it with the cutthroat, the dauthi ghoul gets +1/+1 whenever a creature with shadow is put in the graveyard, pumping up yours

give enemy creature to showow with embrace, destroy with cutthroat, increas power of ghoul, use maze of shadows on cutthroat to repeat

cutthroat destroys your shadow creature. crossroads return that creature to top of your library. dauthi ghoul gets bigger

Use the Dauthi Trapper to give one of you opponents creatures shadow, then kill it with your Dauthi Cutthroat

give your own creature shadow and make it unblockable or give opponent's creature shadow and destroy it with the cutthroat / untap it with maze (no damage) and you can still destroy it

either way you can make your creature unblockable, deal damage and destroy a creature