Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Tribute 1 monster; Special Summon 3 "Nightmare Archfiend Tokens" (Fiend-Type/DARK/Level 6/ATK 2000/DEF 2000) to your opponent's field in Attack Position. Each time 1 is destroyed, its controller takes 800 damage.
--ナイトメア・デーモンズ
--Nightmare Archfiends
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_names={42956964}
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.CheckReleaseGroupCost(tp,nil,1,false,nil,nil) end
	local g=Duel.SelectReleaseGroupCost(tp,nil,1,1,false,nil,nil)
	Duel.Release(g,REASON_COST)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) and Duel.GetLocationCount(1-tp,LOCATION_MZONE)>2
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_ARCHFIEND,TYPES_TOKEN,2000,2000,6,RACE_FIEND,ATTRIBUTE_DARK,POS_FACEUP_ATTACK,1-tp) end
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,3,tp,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,3,tp,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) or Duel.GetLocationCount(1-tp,LOCATION_MZONE)<3 
		or not Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_ARCHFIEND,TYPES_TOKEN,2000,2000,6,RACE_FIEND,ATTRIBUTE_DARK,POS_FACEUP_ATTACK,1-tp) then return end
	for i=1,3 do
		local token=Duel.CreateToken(tp,id+1)
		if Duel.SpecialSummonStep(token,0,tp,1-tp,false,false,POS_FACEUP_ATTACK) then
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
			e1:SetCode(EVENT_LEAVE_FIELD)
			e1:SetOperation(s.damop)
			token:RegisterEffect(e1,true)
		end
	end
	Duel.SpecialSummonComplete()
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsReason(REASON_DESTROY) then
		Duel.Damage(c:GetPreviousControler(),800,REASON_EFFECT)
	end
	e:Reset()
end