Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
During the End Phase: You can banish this card; activate 1 "Dream Mirror of Joy" directly from your hand or Deck. You can only use this effect of "Dream Mirror of Terror" once per turn. Each time your opponent Special Summons a monster(s), inflict 300 damage to your opponent. This effect is only applied while you control a DARK "Dream Mirror" monster.
--闇黒の夢魔鏡
--Dream Mirror of Terror
--Scripted by ahtelel
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Activate 1 "Dream Mirror of Joy" from hand or deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_PHASE+PHASE_END)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCountLimit(1,id)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.tftg)
	e2:SetOperation(s.tfop)
	c:RegisterEffect(e2)
	--Inflict 300 damage each time opponent special summons a monster(s)
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e3:SetRange(LOCATION_FZONE)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetCondition(s.damcon)
	e3:SetOperation(s.damop)
	c:RegisterEffect(e3)
end
s.listed_names={CARD_DREAM_MIRROR_JOY}
s.listed_series={SET_DREAM_MIRROR}
function s.filter(c,tp)
	return c:IsCode(CARD_DREAM_MIRROR_JOY) and c:GetActivateEffect():IsActivatable(tp,true,true)
end
function s.tftg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK|LOCATION_HAND,0,1,nil,tp) end
	if not Duel.CheckPhaseActivity() then Duel.RegisterFlagEffect(tp,CARD_MAGICAL_MIDBREAKER,RESET_CHAIN,0,1) end
end
function s.tfop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
	local tc=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK|LOCATION_HAND,0,1,1,nil,tp):GetFirst()
	Duel.ActivateFieldSpell(tc,e,tp,eg,ep,ev,re,r,rp)
end
function s.damfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_DREAM_MIRROR) and c:IsAttribute(ATTRIBUTE_DARK)
end
function s.damcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(s.damfilter,e:GetHandlerPlayer(),LOCATION_MZONE,0,1,nil) 
		and eg:IsExists(Card.IsSummonPlayer,1,nil,1-tp)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_CARD,0,id)
	Duel.Damage(1-tp,300,REASON_EFFECT)
end