Death

Clarifications & Reminders:
 * Hit points no longer go below zero. Note the Death Saving Throw rules (p197).
 * getting hit while at 0 is auto failure
 * a crit while at 0 counts as two failures
 * a hit while at 0 from within 5’ is an auto crit

Return to House Rules
 * Coup de Grace rules (it's buried under the Helpless condition). If you attack a helpless opponent you get advantage on the attack, and if you hit you auto-crit. It doesn't force a save-or-die or anything similar.