--Vidar, Hero of the Cascad
--Script by XGlitchy30
function c31231315.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,aux.FilterBoolFunction(Card.IsRace,RACE_AQUA),6,3)
	c:EnableReviveLimit()
	--Back to Deck
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(31231315,0))
	e1:SetCategory(CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,31231315)
	e1:SetCost(c31231315.tdcost)
	e1:SetTarget(c31231315.tdtg)
	e1:SetOperation(c31231315.tdop)
	c:RegisterEffect(e1)
	--halve stats
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(31231315,1))
	e2:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCondition(c31231315.hlcon)
	e2:SetCost(c31231315.tdcost)
	e2:SetOperation(c31231315.hlop)
	c:RegisterEffect(e2)
	--spsummon
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(31231315,2))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_GRAVE)
	e3:SetCountLimit(1,31231215)
	e3:SetCost(c31231315.hspcost)
	e3:SetTarget(c31231315.hsptg)
	e3:SetOperation(c31231315.hspop)
	c:RegisterEffect(e3)
end
--filters
function c31231315.rfilter(c)
	return c:IsRace(RACE_AQUA) and c:IsAbleToRemoveAsCost()
end
--Back to Deck
function c31231315.tdcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,1,REASON_COST) end
	e:GetHandler():RemoveOverlayCard(tp,1,1,REASON_COST)
end
function c31231315.tdtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(1-tp) and chkc:IsAbleToDeck() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsAbleToDeck,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,Card.IsAbleToDeck,tp,0,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,0,0)
end
function c31231315.tdop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoDeck(tc,nil,2,REASON_EFFECT)
	end
end
--halve stats
function c31231315.hlcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil)
end
function c31231315.hlop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tg=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	local tc=tg:GetFirst()
	while tc do
		local atk=tc:GetAttack()
		local def=tc:GetDefense()
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetValue(atk/2)
		e1:SetReset(RESET_EVENT+0x1fe0000)
		tc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_SET_DEFENSE_FINAL)
		e2:SetValue(def/2)
		e2:SetReset(RESET_EVENT+0x1fe0000)
		tc:RegisterEffect(e2)
		tc=tg:GetNext()
	end
end
--spsummon
function c31231315.hspcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c31231315.rfilter,tp,LOCATION_GRAVE,0,6,e:GetHandler()) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,c31231315.rfilter,tp,LOCATION_GRAVE,0,6,6,e:GetHandler())
	Duel.Remove(g,POS_FACEUP,REASON_COST)
end
function c31231315.hsptg(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 c31231315.hspop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
end