Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
While this card is equipped to a monster, that monster can make a second attack during each Battle Phase.
--ドラグニティ－ブラックスピア
--Dragunity Brandistock
local s,id=GetID()
function s.initial_effect(c)
	--Double Attack
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_EQUIP)
	e1:SetCode(EFFECT_EXTRA_ATTACK)
	e1:SetValue(1)
	c:RegisterEffect(e1)
end