1 south puts you in range.
The fireball tears through the hallway, doing 16 damage to Vir.
ok was this post wrong then?
No, it wasn't. I think you just got the turn order wrong here.
What happened was:
1) Vir had 26 HP. (post 111)
2) Fireball costs him 16, putting him at 10.
3) He steals the healing potion, consuming half of it, bringing him to 20.
4) Fireball costs him 5, putting him at 15.
5) The other half of the potion puts him at 25.
Unless I'm mistaken, that's what happened. Right?