Throw my knife

You twist around quickly, not bothering to mask your movement. The archer pulls up his bow and quickly draws it, an arrow already nocked on it. You throw your knife before he can shoot, however, the knife flies true, and plunges into the archer's armpit. The archer gasps and drops the bow, making the arrow that was meant for you hit the ground.

You run up to the archer and pushes him, no, her down. You realise that its a female elf, probably one of their elite rangers. They were constantly scouting your Master's lands, prying it for weak-points. Her life is fading, and she´s growing weak. Her glazing eyes are looking up at you with surprise and hatred.

You don´t know how you know it, but you realise that you could extract information from her even now that she´s dying. She resists weakly as you cup her face in your hands. You smile, showing her your canines. "You might think your knowledge will be secret. But I will find out, one way or another."
She smiles, she thinks her knowledge is safe. Time to show her otherwise.

You pull your knife out of her armpit and imbue its blade with magic, making it glow purplish. You then sink the blade into her heart in one quick thrust. Her eyes widen in shock as she feels herself being drained away, not to her gods promise of an afterlife, but your blade. As her life fades, your spell-imbued blade absorbs her very soul.

You drop her dead body and look at your still glowing blade. You could take her soul for your own, along with its knowledge. Or you could return to your master and present him with an unexpected gift. Lastly, you could just sheathe your dagger and save that decision for later.