Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
[ Pendulum Effect ] While this card is in your Pendulum Zone, if you Fusion Summon a DARK Fusion Monster, you can also use cards in your Pendulum Zones as monsters on the field, as material for its Fusion Summon. ---------------------------------------- [ Monster Effect ] If this card is sent to the GY or added to your Extra Deck face-up because it was used as material for a Fusion Summon: You can choose monsters on the field, up to the number of monsters you control, and place 1 Predator Counter on each one, and if you do, any of those monsters that are Level 2 or higher become Level 1 as long as they have a Predator Counter. * The above text is unofficial and describes the card's functionality in the OCG.
--捕食植物トリアンティス
--Predaplant Triantis
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	Pendulum.AddProcedure(c)
	--Allow cards in the Pendulum Zones as fusion materials
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_EXTRA_FUSION_MATERIAL)
	e1:SetRange(LOCATION_PZONE)
	e1:SetTargetRange(LOCATION_PZONE,0)
	e1:SetValue(function(_,c) return c and c:IsAttribute(ATTRIBUTE_DARK) end)
	c:RegisterEffect(e1)
	--Place Predator Counters
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_COUNTER)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_BE_MATERIAL)
	e2:SetCondition(s.ctcon)
	e2:SetTarget(s.cttg)
	e2:SetOperation(s.ctop)
	c:RegisterEffect(e2)
end
s.counter_place_list={COUNTER_PREDATOR}
function s.ctcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return (r&REASON_FUSION)==REASON_FUSION and c:IsFaceup()
		and c:IsLocation(LOCATION_GRAVE|LOCATION_EXTRA) 
end
function s.cttg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)>0
		and Duel.IsExistingMatchingCard(Card.IsCanAddCounter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil,COUNTER_PREDATOR,1) end
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	local max=Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_COUNTER)
	local g=Duel.SelectMatchingCard(tp,Card.IsCanAddCounter,tp,LOCATION_MZONE,LOCATION_MZONE,1,max,nil,COUNTER_PREDATOR,1)
	if #g<1 then return end
	local c=e:GetHandler()
	for tc in aux.Next(g) do
		if tc:AddCounter(COUNTER_PREDATOR,1) and tc:GetLevel()>1 then
			--Become Level 1
			local e1=Effect.CreateEffect(c)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_CHANGE_LEVEL)
			e1:SetReset(RESET_EVENT|RESETS_STANDARD)
			e1:SetCondition(s.lvcon)
			e1:SetValue(1)
			tc:RegisterEffect(e1)
		end
	end
end
function s.lvcon(e)
	return e:GetHandler():GetCounter(COUNTER_PREDATOR)>0
end