--Brilliant Amethyst
function c171000127.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCountLimit(1,171000127)
	e1:SetTarget(c171000127.target)
	e1:SetOperation(c171000127.activate)
	c:RegisterEffect(e1)
	--cannot be destroyed
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,171000127)
	e2:SetCost(c171000127.indcost)
	e2:SetTarget(c171000127.indtg)
	e2:SetOperation(c171000127.indop)
	c:RegisterEffect(e2)
end
function c171000127.filter(c)
	return c:IsFaceup() and c:IsSetCard(0xfef) and c:IsType(TYPE_MONSTER)
end
function c171000127.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and c171000127.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(c171000127.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,c171000127.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function c171000127.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
		e1:SetCode(EVENT_PRE_BATTLE_DAMAGE)
		e1:SetCondition(c171000127.ddcon)
		e1:SetOperation(c171000127.ddop)
		e1:SetOwnerPlayer(tp)
		e1:SetReset(RESET_EVENT+0x1fe0000+RESET_PHASE+PHASE_END)
		tc:RegisterEffect(e1)
	end
end
function c171000127.ddcon(e,tp,eg,ep,ev,re,r,rp)
	return ep~=e:GetOwnerPlayer()
end
function c171000127.ddop(e,tp,eg,ep,ev,re,r,rp)
	Duel.ChangeBattleDamage(ep,ev*2)
end
function c171000127.indcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToRemoveAsCost() end
	Duel.Remove(e:GetHandler(),POS_FACEUP,REASON_COST)
end
function c171000127.indtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and c171000127.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(c171000127.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,c171000127.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function c171000127.indop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
		e1:SetValue(1)
		e1:SetReset(RESET_EVENT+0x1fe0000)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
		tc:RegisterEffect(e2)
	end
end