Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All non-Effect Monsters on the field are unaffected by monster effects. Once per turn, if your opponent Special Summons an Effect Monster(s), while you control a face-down monster or non-Effect Monster (except during the Damage Step): You can draw 2 cards.
--天威無崩の地
--Flawless Perfection of the Tenyi
--Scripted by Eerie Code
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)
	--immune
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_IMMUNE_EFFECT)
	e2:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e2:SetRange(LOCATION_FZONE)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsNonEffectMonster))
	e2:SetValue(s.immfilter)
	c:RegisterEffect(e2)
	--draw
	local e3=Effect.CreateEffect(c)
	e3:SetCategory(CATEGORY_DRAW)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_PLAYER_TARGET)
	e3:SetRange(LOCATION_FZONE)
	e3:SetCountLimit(1)
	e3:SetCondition(s.drcon)
	e3:SetTarget(s.drtg)
	e3:SetOperation(s.drop)
	c:RegisterEffect(e3)
end
function s.filter(c)
	return (not c:IsType(TYPE_EFFECT) and c:IsFaceup()) or c:IsFacedown()
end
function s.immfilter(e,te)
	return te:IsMonsterEffect()
end
function s.drfilter(c,tp)
	return not c:IsSummonPlayer(tp) and c:IsType(TYPE_EFFECT) and c:IsFaceup()
end
function s.drcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.drfilter,1,nil,tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_MZONE,0,1,nil)
end
function s.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,2) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(2)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,2)
end
function s.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end