Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 Tuner + 2+ non-Tuner monsters When this card is Synchro Summoned: You can banish up to 3 cards your opponent controls. If this Synchro Summoned card in its owner's control is destroyed by an opponent's card: You can Special Summon 1 "Trishula, Dragon of the Ice Barrier" from your Extra Deck or GY, its ATK becomes 3300, then halve the ATK of any face-up monsters your opponent currently controls, also negate their effects. You can only use this effect of "Trishula, Zero Dragon of the Ice Barrier" once per turn.
--氷結界の還零龍 トリシューラ
--Trishula, Zero Dragon of the Ice Barrier
local s,id=GetID()
function s.initial_effect(c)
	--Synchro summon procedure
	Synchro.AddProcedure(c,nil,1,1,Synchro.NonTuner(nil),2,99)
	--Must be properly summoned before reviving
	c:EnableReviveLimit()
	--When synchro summoned, banish up to 3 of opponent's cards
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_REMOVE)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCondition(s.rmcon)
	e1:SetTarget(s.rmtg)
	e1:SetOperation(s.rmop)
	c:RegisterEffect(e1)
	--Special summon "Trishula, Dragon of the Ice Barrier" from extra deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
function s.rmcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsSynchroSummoned()
end
function s.rmtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD,1,nil) end
	local g=Duel.GetMatchingGroup(Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD,nil)
	Duel.SetOperationInfo(0,CATEGORY_REMOVE,g,1,0,0)
end
function s.rmop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsAbleToRemove,tp,0,LOCATION_ONFIELD,nil)
	if #g>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
		local sg=g:Select(tp,1,3,nil)
		Duel.HintSelection(sg)
		Duel.Remove(sg,POS_FACEUP,REASON_EFFECT)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsSynchroSummoned()
		and (c:IsReason(REASON_BATTLE) or (c:GetReasonPlayer()==1-tp and c:IsReason(REASON_EFFECT)))
		and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_MZONE)
end
function s.spfilter(c,e,tp)
	return c:IsCode(52687916) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
		and (Duel.GetLocationCountFromEx(tp,tp,nil,c)>0 or not c:IsLocation(LOCATION_EXTRA))
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local loc=LOCATION_EXTRA
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then loc=loc|LOCATION_GRAVE end
	if chk==0 then return Duel.IsExistingMatchingCard(s.spfilter,tp,loc,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,loc)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local loc=LOCATION_EXTRA
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then loc=loc|LOCATION_GRAVE end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.spfilter),tp,loc,0,1,1,nil,e,tp)
	if #g>0 and Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)~=0 then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_ATTACK)
		e1:SetValue(3300)
		e1:SetReset(RESET_EVENT|(RESETS_STANDARD&~RESET_TOFIELD))
		g:GetFirst():RegisterEffect(e1)
		local g2=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
		if #g2>0 then
			for tc2 in aux.Next(g2) do
				local e1=Effect.CreateEffect(e:GetHandler())
				e1:SetType(EFFECT_TYPE_SINGLE)
				e1:SetCode(EFFECT_SET_ATTACK_FINAL)
				e1:SetReset(RESET_EVENT|RESETS_STANDARD)
				e1:SetValue(math.ceil(tc2:GetBaseAttack()/2))
				tc2:RegisterEffect(e1)
			end
		end
		local g3=Duel.GetMatchingGroup(Card.IsNegatableMonster,tp,0,LOCATION_MZONE,nil)
		if #g3>0 then
			for tc3 in aux.Next(g3) do
				local e1=Effect.CreateEffect(c)
				e1:SetType(EFFECT_TYPE_SINGLE)
				e1:SetCode(EFFECT_DISABLE)
				e1:SetReset(RESET_EVENT|RESETS_STANDARD)
				tc3:RegisterEffect(e1)
				local e2=Effect.CreateEffect(c)
				e2:SetType(EFFECT_TYPE_SINGLE)
				e2:SetCode(EFFECT_DISABLE_EFFECT)
				e2:SetReset(RESET_EVENT|RESETS_STANDARD)
				tc3:RegisterEffect(e2)
				if tc3:IsType(TYPE_TRAPMONSTER) then
					local e3=Effect.CreateEffect(c)
					e3:SetType(EFFECT_TYPE_SINGLE)
					e3:SetCode(EFFECT_DISABLE_TRAPMONSTER)
					e3:SetReset(RESET_EVENT|RESETS_STANDARD)
					tc3:RegisterEffect(e3)
				end
			end
		end
	end
end