Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Equip only to a monster you control. You can only control 1 "Dunnell, the Noble Arms of Light". The equipped monster gains 500 ATK for each monster you control with a different name that mentions "Adventurer Token". If this card is sent to the GY: You can target 1 "Adventurer Token" you control; equip this card to that target. You can only use this effect of "Dunnell, the Noble Arms of Light" once per turn.
--光の聖剣ダンネル
--Dunnell, the Noble Arms of Light
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	c:SetUniqueOnField(1,0,id)
	aux.AddEquipProcedure(c,0)
	--Increase ATK by 500 per monster that mentions "Adventurer Token"
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_EQUIP)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(s.atkval)
	c:RegisterEffect(e1)
	--Equip this card to "Adventurer Token"
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_EQUIP)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.eqcon)
	e2:SetTarget(s.eqtg)
	e2:SetOperation(s.eqop)
	c:RegisterEffect(e2)
end
s.listed_names={TOKEN_ADVENTURER}
function s.atkfilter(c)
	return c:IsFaceup() and c:ListsCode(TOKEN_ADVENTURER)
end
function s.atkval(e,c)
	return Duel.GetMatchingGroup(s.atkfilter,e:GetHandlerPlayer(),LOCATION_MZONE,0,nil):GetClassCount(Card.GetCode)*500
end
function s.eqcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():CheckUniqueOnField(tp)
end
function s.eqfilter(c)
	return c:IsFaceup() and c:IsCode(TOKEN_ADVENTURER)
end
function s.eqtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local c=e:GetHandler()
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.eqfilter(chkc) end
	if chk==0 then return c:IsRelateToEffect(e) and Duel.GetLocationCount(tp,LOCATION_SZONE)>0
		and Duel.IsExistingTarget(s.eqfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EQUIP)
	Duel.SelectTarget(tp,s.eqfilter,tp,LOCATION_MZONE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,c,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,c,1,0,0)
end
function s.eqop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) and tc:IsFaceup()
		and tc:IsCode(TOKEN_ADVENTURER) and tc:IsControler(tp) and c:CheckUniqueOnField(tp) then
		Duel.Equip(tp,c,tc)
	end
end