Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Add 1 "Endymion" card from your Deck to your hand, then you can count the number of "Spell Power Mastery" and "Spell Power Grasp" you control and/or have in your GY, and place that many Spell Counters among card(s) you control that you can place a Spell Counter on. You can only activate 1 "Spell Power Mastery" per turn.
--魔力統轄
--Spell Power Mastery
--Scripted by AlphaKretin
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
end
s.counter_place_list={COUNTER_SPELL}
s.listed_series={SET_ENDYMION}
s.listed_names={75014062}
function s.thfilter(c)
	return c:IsSetCard(SET_ENDYMION) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 and Duel.SendtoHand(g,nil,REASON_EFFECT)>0 then
		Duel.ConfirmCards(1-tp,g)
		local ct=Duel.GetMatchingGroupCount(aux.FaceupFilter(Card.IsCode,id,75014062),tp,LOCATION_ONFIELD|LOCATION_GRAVE,0,nil)
		local cg=Duel.GetMatchingGroup(aux.FaceupFilter(Card.IsCanAddCounter,COUNTER_SPELL,1),tp,LOCATION_ONFIELD,0,nil)
		if ct>0 and #cg>0 and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
			Duel.BreakEffect()
			while ct>0 and #cg>0 do
				cg:Select(tp,1,1,nil):GetFirst():AddCounter(COUNTER_SPELL,1)
				ct=ct-1
				cg=Duel.GetMatchingGroup(aux.FaceupFilter(Card.IsCanAddCounter,COUNTER_SPELL,1),tp,LOCATION_ONFIELD,0,nil)
			end
		end
	end
end