Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can Normal Summon this card without Tributing. If you do, during the End Phase: Send it to the Graveyard.
--光神機－桜火
--Majestic Mech - Ohka
local s,id=GetID()
function s.initial_effect(c)
	--summon with no tribute
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SUMMON_PROC)
	e1:SetCondition(s.ntcon)
	e1:SetOperation(s.ntop)
	c:RegisterEffect(e1)
end
function s.ntcon(e,c,minc)
	if c==nil then return true end
	return minc==0 and c:GetLevel()>4 and Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0
end
function s.ntop(e,tp,eg,ep,ev,re,r,rp,c)
	--to grave
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,1))
	e1:SetCategory(CATEGORY_TOGRAVE)
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCode(EVENT_PHASE+PHASE_END)
	e1:SetTarget(s.tgtg)
	e1:SetOperation(s.tgop)
	e1:SetReset(RESET_EVENT|(RESETS_STANDARD|RESET_MSCHANGE|RESET_OVERLAY)&~(RESET_TOFIELD|RESET_LEAVE|RESET_TEMP_REMOVE))
	c:RegisterEffect(e1)
end
function s.tgtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,e:GetHandler(),1,0,0)
end
function s.tgop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and c:IsFaceup() then
		Duel.SendtoGrave(c,REASON_EFFECT)
	end
end