--氷の王 ニードヘッグ
--Nidhogg, Generaider Boss of Ice
--Scripted by AlphaKretin
local s,id=GetID()
function s.initial_effect(c)
	c:SetUniqueOnField(1,0,id)
	--negate special summon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DISABLE_SUMMON+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_SPSUMMON)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.discon)
	e1:SetCost(s.discost)
	e1:SetTarget(s.distg)
	e1:SetOperation(s.disop)
	c:RegisterEffect(e1)
end
s.listed_series={SET_GENERAIDER}
function s.discon(e,tp,eg,ep,ev,re,r,rp)
	return tp~=ep and Duel.GetCurrentChain()==0
end
function s.cfilter(c)
	return c:IsSetCard(SET_GENERAIDER) or c:IsRace(RACE_WYRM)
end
function s.discost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.CheckReleaseGroupCost(tp,s.cfilter,1,false,nil,nil) end
	local g=Duel.SelectReleaseGroupCost(tp,s.cfilter,1,1,false,nil,nil)
	Duel.Release(g,REASON_COST)
end
function s.distg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_DISABLE_SUMMON,eg,#eg,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,#eg,0,0)
end
function s.disop(e,tp,eg,ep,ev,re,r,rp)
	Duel.NegateSummon(eg)
	Duel.Destroy(eg,REASON_EFFECT)
end