Got it.Oh well. I guess I'll shoot him, but it seems foolish.
4.6.19 (Pyre) Pyre skirts along the balcony wall in the direction Vyrlim is pointing, hops over the short wall and easily drops to into the misty region below. Coughing and forcing a deep breath, she feels the poison burning in her lungs but manages to resist it (Roll 16+4=20 vs. DC 15 CON save).
Before her rattling in its cage she sees a zombie, reaching through the bars ready to grasp her!
Spotting Vecna past the corner edge of a wall in front of her, she draws her arrows and looses it into the archlich, hitting (Roll 16+12=28 vs. AC 18) for 14 piercing damage.
Vecna curses Pyre with a fell word and she takes 5 necrotic damage (half 10) as he teleports right in front of her!
It is now Vecna's Turn on Initiative 12.