Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is Normal Summoned: You can have all face-up monsters you currently control gain 1 Level, also, they become DARK (these effects last until the End Phase).
--ダークロン
--Darklon
local s,id=GetID()
function s.initial_effect(c)
	--level,attribute
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_TRIGGER_O+EFFECT_TYPE_SINGLE)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil)
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(1)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
		local e2=Effect.CreateEffect(e:GetHandler())
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e2:SetCode(EFFECT_CHANGE_ATTRIBUTE)
		e2:SetValue(ATTRIBUTE_DARK)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e2)
	end
end