[douglas]

He was killed by a poison's secondary effect? Yeah, he'd definitely still be alive, then. Secondary effects from poison have a 1 minute delay, 10 rounds, more than enough time for us to have finished the summoned monster, noticed the trader's poisoned state (with prompting from him, probably), and cured it. If he's a druid, he could probably have neutralized it himself in that time, anyway.

Holy does not bypass the Pit Fiend's regen because the extra damage is added as weapon damage, which requires that it also be silver to bypass the regen. Against the Ice Devil, silver is not needed so the good alignment effect of Holy is sufficient.