--created by ZEN, coded by ZEN & Lyris
local cid,id=GetID()
function cid.initial_effect(c)
	aux.AddLinkProcedure(c,nil,2,3,cid.lcheck)
	c:EnableReviveLimit()
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(cid.stattg)
	e1:SetValue(500)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_UPDATE_DEFENSE)
	c:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:Desc(1)
	e3:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_LEAVE_GRAVE)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e3:SetTarget(cid.target)
	e3:SetOperation(cid.operation)
	c:RegisterEffect(e3)
	local e4=Effect.CreateEffect(c)
	e4:Desc(2)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e4:SetCode(EVENT_MOVE)
	e4:SetRange(LOCATION_MZONE)
	e4:SetCountLimit(1,id)
	e4:SetCategory(CATEGORY_DRAW)
	e4:SetCondition(cid.drcon)
	e4:SetTarget(cid.drtg)
	e4:SetOperation(cid.drop)
	c:RegisterEffect(e4)
end
function cid.lcheck(g)
	return g:IsExists(Card.IsLinkSetCard,1,nil,0xd7c)
end
function cid.stattg(e,c)
	return c:IsSetCard(0xd7c) and c:GetSequence()<5
end
function cid.filter(c)
	return c:IsType(TYPE_MONSTER) and c:IsSetCard(0xd7c) and not c:IsForbidden()
end
function cid.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and cid.filter(chkc) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_SZONE)>0 and Duel.IsExistingTarget(cid.filter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
	local g=Duel.SelectTarget(tp,aux.NecroValleyFilter(cid.filter),tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,g,#g,0,0)
	local sg=Duel.GetMatchingGroupCount(cid.sfilter,tp,LOCATION_SZONE,LOCATION_SZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_ATKCHANGE,e:GetHandler(),1,tp,(sg+#g)*400)
end
function cid.operation(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_SZONE)<=0 then return end
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToChain() or not Duel.MoveToField(tc,tp,tp,LOCATION_SZONE,POS_FACEUP,true) then return end
	local c=e:GetHandler()
	local e1=Effect.CreateEffect(c)
	e1:Desc(0)
	e1:SetCode(EFFECT_CHANGE_TYPE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
	e1:SetReset(RESET_EVENT+RESETS_STANDARD-RESET_TURN_SET)
	e1:SetValue(TYPE_SPELL+TYPE_CONTINUOUS)
	tc:RegisterEffect(e1)
	local ct=Duel.GetMatchingGroupCount(cid.sfilter,tp,LOCATION_SZONE,LOCATION_SZONE,nil)
	if c:IsRelateToChain() and c:IsFaceup() and ct>0 then
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_UPDATE_ATTACK)
		e2:SetValue(ct*400)
		e2:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_DISABLE+RESET_PHASE+PHASE_END)
		c:RegisterEffect(e2)
	end
end
function cid.sfilter(c)
	return c:GetSequence()<5
end

function cid.cfilter(c,tp)
	return c:IsLocation(LOCATION_SZONE) and c:GetSequence()<5 and c:IsControler(tp) and c:IsFaceup() and c:IsSetCard(0xd7c)
end
function cid.drcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(cid.cfilter,1,nil,tp)
end
function cid.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function cid.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end