Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is Normal or Special Summoned: You can target 1 Winged Beast "Dragunity" monster you control; equip it with 1 Level 3 or lower Dragon "Dragunity" monster from your Deck.
--ドラグニティ－プリムス・ピルス
--Dragunity Primus Pilus
local s,id=GetID()
function s.initial_effect(c)
	--equip
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_EQUIP)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetTarget(s.eqtg)
	e1:SetOperation(s.eqop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e2)
end
s.listed_series={SET_DRAGUNITY}
function s.filter(c)
	return c:IsFaceup() and c:IsSetCard(SET_DRAGUNITY) and c:IsRace(RACE_WINGEDBEAST)
end
function s.eqtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_SZONE)>0
		and Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil)
		and Duel.IsExistingMatchingCard(s.eqfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,nil,1,tp,LOCATION_DECK)
end
function s.eqfilter(c)
	return c:IsSetCard(SET_DRAGUNITY) and c:IsRace(RACE_DRAGON) and c:IsLevelBelow(3) and not c:IsForbidden()
end
function s.eqop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_SZONE)<=0 then return end
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) or tc:IsFacedown() then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EQUIP)
	local eq=Duel.SelectMatchingCard(tp,s.eqfilter,tp,LOCATION_DECK,0,1,1,nil)
	local eqc=eq:GetFirst()
	if eqc and Duel.Equip(tp,eqc,tc,true) then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_EQUIP_LIMIT)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		e1:SetValue(s.eqlimit)
		e1:SetLabelObject(tc)
		eqc:RegisterEffect(e1)
	end
end
function s.eqlimit(e,c)
	return c==e:GetLabelObject()
end