increase_wounds_effect

increase_wounds_effect = {
	if = {
		limit = {
			has_trait_rank = {
				trait = wounded
				rank < 3
			}
		}
		increase_wounds_no_death_effect = { REASON = $REASON$ }
	}
	else_if = { #Using an if because this needs to never go wrong
		limit = {
			has_trait_rank = {
				trait = wounded
				rank = 3
			}
		}
		death = {
			death_reason = death_$REASON$
		}
	}
}

As written in game/common/scripted_effects/20_health_effects.txt.