--王の襲来
--Generaider Boss Fight
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_GENERAIDER}
function s.filter(c,tp)
	return c:IsSetCard(SET_GENERAIDER) and c:IsType(TYPE_FIELD) and c:GetActivateEffect():IsActivatable(tp,true,true)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK|LOCATION_GRAVE,0,1,nil,tp)
		and Duel.IsPlayerCanDraw(1-tp,1) end
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,1-tp,1)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(id,0))
	local tc=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.filter),tp,LOCATION_DECK|LOCATION_GRAVE,0,1,1,nil,tp):GetFirst()
	if not Duel.ActivateFieldSpell(tc,e,tp,eg,ep,ev,re,r,rp) then return end
	Duel.BreakEffect()
	Duel.Draw(1-tp,1,REASON_EFFECT)
end