--Aerial Eater
local s,id,o=GetID()
function s.initial_effect(c)
	--fusion material
	c:EnableReviveLimit()
	aux.AddFusionProcFunRep(c,s.ffilter,2,true)
	--to grave
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOGRAVE)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.tgcon)
	e1:SetTarget(s.tgtg)
	e1:SetOperation(s.tgop)
	c:RegisterEffect(e1)
	--special summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_GRAVE)
	e1:SetCountLimit(1,id+o)
	e2:SetCost(s.spcost)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
function s.ffilter(c,fc,sub,mg,sg)
	return c:IsRace(RACE_FIEND) and (not sg or sg:FilterCount(aux.TRUE,c)==0 or sg:IsExists(Card.IsFusionAttribute,1,c,c:GetFusionAttribute()))
end
function s.tgcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsSummonType(SUMMON_TYPE_FUSION)
end
function s.tgfilter(c)
	return c:IsRace(RACE_FIEND) and c:IsAbleToGrave()
end
function s.tgtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.tgfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.tgop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.tgfilter,tp,LOCATION_DECK,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoGrave(g,REASON_EFFECT)
	end
end
function s.rfilter(c)
	return not c:IsCode(id) and c:IsRace(RACE_FIEND) and c:IsLevelAbove(6) and c:IsAbleToRemoveAsCost()
end
function s.rselect(g)
	return g:GetClassCount(Card.GetAttributeInGrave)==1
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=Duel.GetMatchingGroup(s.rfilter,tp,LOCATION_GRAVE,0,nil)
	if chk==0 then return g:CheckSubGroup(s.rselect,2,2) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local sg=g:SelectSubGroup(tp,s.rselect,false,2,2)
	Duel.Remove(sg,POS_FACEUP,REASON_COST)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and e:GetHandler():IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and aux.NecroValleyFilter()(c) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
end