Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All "Chronomaly" monsters you control gain 800 ATK.
--先史遺産－ピラミッド・アイ・タブレット
--Chronomaly Pyramid Eye Tablet
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)
	--atk down
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE,0)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,SET_CHRONOMALY))
	e2:SetValue(800)
	c:RegisterEffect(e2)
end
s.listed_series={SET_CHRONOMALY}