Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Special Summoned, except by its own effect. After this face-up card on the field is destroyed and sent to the Graveyard, during the Standby Phase of the next turn: You can discard 1 card; Special Summon this card from the Graveyard.
--The supremacy SUN
--The Supremacy Sun
local s,id=GetID()
function s.initial_effect(c)
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetValue(aux.FALSE)
	c:RegisterEffect(e1)
	--spsummon
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetOperation(s.spr)
	c:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetRange(LOCATION_GRAVE)
	e3:SetCode(EVENT_PHASE|PHASE_STANDBY)
	e3:SetCondition(s.spcon)
	e3:SetCost(s.spcost)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
function s.spr(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsReason(REASON_DESTROY) and c:IsPreviousLocation(LOCATION_ONFIELD)
		and c:IsPreviousPosition(POS_FACEUP) then
		c:RegisterFlagEffect(id,RESETS_STANDARD_PHASE_END,0,2)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:GetTurnID()~=Duel.GetTurnCount() and c:GetFlagEffect(id)>0
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD,nil)
end
function s.sptg(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,true,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
	e:GetHandler():ResetFlagEffect(id)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,true,false,POS_FACEUP)
	end
end