Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn: You can banish 1 "Lightsworn" monster from your hand or GY, then target 1 face-up monster on the field; it loses ATK and DEF equal to the banished monster's Level x 300, until the end of this turn. Once per turn, if your other "Lightsworn" monster's effect is activated: Send the top 2 cards of your Deck to the GY.
--トワイライトロード・ジェネラル ジェイン
--Jain, Twilightsworn General
local s,id=GetID()
function s.initial_effect(c)
	--reduce atk
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCountLimit(1)
	e1:SetCost(s.atkcost)
	e1:SetTarget(s.atktg)
	e1:SetOperation(s.atkop)
	c:RegisterEffect(e1)
	--mill
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_DECKDES)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_CHAINING)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCondition(s.ddcon)
	e2:SetTarget(s.ddtg)
	e2:SetOperation(s.ddop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_LIGHTSWORN}
function s.atkcfilter(c)
	return c:IsSetCard(SET_LIGHTSWORN) and c:IsLevelAbove(1) and c:IsAbleToRemoveAsCost() and (c:IsLocation(LOCATION_HAND) or aux.SpElimFilter(c,true))
		and Duel.IsExistingTarget(Card.IsFaceup,0,LOCATION_MZONE,LOCATION_MZONE,1,c)
end
function s.atkcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.atkcfilter,tp,LOCATION_HAND|LOCATION_MZONE|LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,s.atkcfilter,tp,LOCATION_HAND|LOCATION_MZONE|LOCATION_GRAVE,0,1,1,nil)
	e:SetLabel(g:GetFirst():GetLevel())
	Duel.Remove(g,POS_FACEUP,REASON_COST)
end
function s.atktg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local lv=e:GetLabel()
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-lv*300)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_UPDATE_DEFENSE)
		tc:RegisterEffect(e2)
	end
end
function s.ddcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local rc=re:GetHandler()
	return re:IsMonsterEffect() and rc~=c
		and rc:IsSetCard(SET_LIGHTSWORN) and rc:IsControler(tp)
end
function s.ddtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_DECKDES,nil,0,tp,2)
end
function s.ddop(e,tp,eg,ep,ev,re,r,rp)
	Duel.DiscardDeck(tp,2,REASON_EFFECT)
end