Well, can you at least tell us whether that is possible in 1 round or 2? I can't find anything for killing both in 1 round flat.

EDIT: I couldn't find anything.
This is the closest:
Shuri: Foshuzzle, attack Ice hydra.
Furious: Attack Ice hydra.
Araches/Leetsan: N, NE, attack 21hp Ice hydra.
Sam: Animate dead on Ice hydra. Seppuku 21hp Ice hydra.
Animated Ice hydra: Attack 21hp Ice hydra.

Anyone else?

EDIT 2: And somehow Araches/Leetsan got killed. Should we raise her, or heal Shuriken?