If a character receives more damage in an attack that they have hit points and get down to -10, at what point in the round do they die. Do they die in the attacker's round? At the end of the current round? On or just before their next action?
A character dies at the moment they reach -10
3.5 PHB1, pg145
Dead (-10 Hit Points or Lower)
When your character's current hit points drop to -10 or lower, or if he takes massive damage (see above), he's dead...
...When a character dies, his soul immediately departs.