Gigantic
Target a number of monsters on the field and/or in the GYs, equal to the difference between your banished cards and your opponent's; banish them, then your opponent can Special Summon 1 monster from their Deck. You can only activate 1 "Gigantic Thundercross" per turn.
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_REMOVE + CATEGORY_SPECIAL_SUMMON + CATEGORY_DECKDES)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetHintTiming(0, TIMINGS_CHECK_MONSTER + TIMING_END_PHASE)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsType(TYPE_MONSTER) and c:IsAbleToRemove()
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
	if chkc then
		return chkc:IsLocation(0x14) and s.filter(chkc)
	end
	local ct = math.abs(Duel.GetFieldGroupCount(tp, LOCATION_REMOVED, 0) - Duel.GetFieldGroupCount(tp, 0, LOCATION_REMOVED))
	if chk == 0 then
		return ct > 0 and Duel.IsExistingTarget(s.filter, tp, 0x14, 0x14, ct, nil)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_REMOVE)
	local g = Duel.SelectTarget(tp, s.filter, tp, 0x14, 0x14, ct, ct, nil)
	Duel.SetOperationInfo(0, CATEGORY_REMOVE, g, ct, 0, 0)
end
function s.sfilter(c, e, tp)
	return c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetChainInfo(0, CHAININFO_TARGET_CARDS):Filter(Card.IsRelateToEffect, nil, e)
	if Duel.Remove(g, POS_FACEUP, REASON_EFFECT) < 1 or Duel.GetLocationCount(1 - tp, LOCATION_MZONE) < 1 then
		return
	end
	local sg = Duel.GetMatchingGroup(s.sfilter, tp, 0, LOCATION_DECK, nil, e, 1 - tp)
	if #sg > 0 and Duel.SelectYesNo(1 - tp, aux.Stringid(id, 1)) then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_SPSUMMON)
		local tg = sg:Select(1 - tp, 1, 1, nil)
		Duel.BreakEffect()
		Duel.SpecialSummon(tg, 0, 1 - tp, 1 - tp, false, false, POS_FACEUP)
	end
end


Gigantic
Target a number of monsters on the field and/or in the GYs, equal to the difference between your banished cards and your opponent's; banish them, then your opponent can Special Summon 1 monster from their Deck. You can only activate 1 "Gigantic Thundercross" per turn.
-- Gigantic
local s, id, o = GetID()
function s.initial_effect(c)
	--Activate
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_REMOVE + CATEGORY_SPECIAL_SUMMON + CATEGORY_DECKDES)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1, id + EFFECT_COUNT_CODE_OATH)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetHintTiming(0, TIMINGS_CHECK_MONSTER + TIMING_END_PHASE)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsType(TYPE_MONSTER) and c:IsAbleToRemove()
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
	if chkc then
		return chkc:IsLocation(0x14) and s.filter(chkc)
	end
	local ct = math.abs(Duel.GetFieldGroupCount(tp, LOCATION_REMOVED, 0) - Duel.GetFieldGroupCount(tp, 0, LOCATION_REMOVED))
	if chk == 0 then
		return ct > 0 and Duel.IsExistingTarget(s.filter, tp, 0x14, 0x14, ct, nil)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_REMOVE)
	local g = Duel.SelectTarget(tp, s.filter, tp, 0x14, 0x14, ct, ct, nil)
	Duel.SetOperationInfo(0, CATEGORY_REMOVE, g, ct, 0, 0)
end
function s.sfilter(c, e, tp)
	return c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
end
function s.activate(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetChainInfo(0, CHAININFO_TARGET_CARDS):Filter(Card.IsRelateToEffect, nil, e)
	if Duel.Remove(g, POS_FACEUP, REASON_EFFECT) < 1 or Duel.GetLocationCount(1 - tp, LOCATION_MZONE) < 1 then
		return
	end
	local sg = Duel.GetMatchingGroup(s.sfilter, tp, 0, LOCATION_DECK, nil, e, 1 - tp)
	if #sg > 0 and Duel.SelectYesNo(1 - tp, aux.Stringid(id, 1)) then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_SPSUMMON)
		local tg = sg:Select(1 - tp, 1, 1, nil)
		Duel.BreakEffect()
		Duel.SpecialSummon(tg, 0, 1 - tp, 1 - tp, false, false, POS_FACEUP)
	end
end

