Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If 2 or more face-up "Blackwing" monsters you control were destroyed this turn, you can Special Summon this card (from your hand). If this card is sent to the Graveyard as a Synchro Material: Gain 600 LP.
--BF－追い風のアリゼ
--Blackwing - Brisote the Tailwind
local s,id=GetID()
function s.initial_effect(c)
	--special summon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_SPSUMMON_PROC)
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	c:RegisterEffect(e1)
	--damage
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_RECOVER)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e2:SetCode(EVENT_BE_MATERIAL)
	e2:SetCondition(s.reccon)
	e2:SetTarget(s.rectg)
	e2:SetOperation(s.recop)
	c:RegisterEffect(e2)
	aux.GlobalCheck(s,function()
		s[0]=0
		s[1]=0
		local ge1=Effect.CreateEffect(c)
		ge1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		ge1:SetCode(EVENT_DESTROY)
		ge1:SetOperation(s.checkop)
		Duel.RegisterEffect(ge1,0)
		aux.AddValuesReset(function()
			s[0]=0
			s[1]=0
		end)
	end)
end
s.listed_series={SET_BLACKWING}
function s.spcon(e,c)
	if c==nil then return true end
	return Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0 and s[c:GetControler()]>=2
end
function s.checkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=eg:GetFirst()
	for tc in aux.Next(eg) do
		local pos=tc:GetPosition()
		if tc:IsLocation(LOCATION_MZONE) and tc:IsSetCard(SET_BLACKWING) and (pos&POS_FACEUP)~=0 then
			s[tc:GetControler()]=s[tc:GetControler()]+1
		end
	end
end
function s.reccon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsLocation(LOCATION_GRAVE) and r==REASON_SYNCHRO
end
function s.rectg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(600)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,600)
end
function s.recop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Recover(p,d,REASON_EFFECT)
end