Artifact
You can Set this card from your hand to your Spell & Trap Zone as a Spell Card. During your opponent's turn, if this Set card in the Spell & Trap Zone is destroyed and sent to your Graveyard: Special Summon it. If this card is Special Summoned during your opponent's turn: Destroy up to 2 Set cards you control (min. 1). You can only use this effect of "Artifact Beagalltach" once per turn.
local s, id, o = GetID()
function s.initial_effect(c)
	--set
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_MONSTER_SSET)
	e1:SetValue(TYPE_SPELL)
	c:RegisterEffect(e1)
	--spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--destroy
	local e3 = Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id, 1))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetCountLimit(1, id)
	e3:SetCondition(s.descon)
	e3:SetTarget(s.destg)
	e3:SetOperation(s.desop)
	c:RegisterEffect(e3)
end
function s.spcon(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	return c:IsPreviousLocation(LOCATION_SZONE) and c:IsPreviousPosition(POS_FACEDOWN) and c:IsPreviousControler(tp) and c:IsReason(REASON_DESTROY) and Duel.GetTurnPlayer() ~= tp
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, e:GetHandler(), 1, 0, 0)
end
function s.spop(e, tp, eg, ep, ev, re, r, rp)
	if e:GetHandler():IsRelateToEffect(e) then
		Duel.SpecialSummon(e:GetHandler(), 0, tp, tp, false, false, POS_FACEUP)
	end
end
function s.descon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() ~= tp
end
function s.filter(c)
	return c:IsFacedown()
end
function s.destg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	local g = Duel.GetMatchingGroup(s.filter, tp, LOCATION_ONFIELD, 0, nil)
	if g:GetCount() > 0 then
		Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, 1, 0, 0)
	end
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetMatchingGroup(s.filter, tp, LOCATION_ONFIELD, 0, nil)
	if g:GetCount() > 0 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DESTROY)
		local sg = g:Select(tp, 1, 2, nil)
		Duel.Destroy(sg, REASON_EFFECT)
	end
end


Artifact
You can Set this card from your hand to your Spell & Trap Zone as a Spell Card. During your opponent's turn, if this Set card in the Spell & Trap Zone is destroyed and sent to your Graveyard: Special Summon it. If this card is Special Summoned during your opponent's turn: Destroy up to 2 Set cards you control (min. 1). You can only use this effect of "Artifact Beagalltach" once per turn.
-- Artifact
local s, id, o = GetID()
function s.initial_effect(c)
	--set
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_MONSTER_SSET)
	e1:SetValue(TYPE_SPELL)
	c:RegisterEffect(e1)
	--spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--destroy
	local e3 = Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id, 1))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetCountLimit(1, id)
	e3:SetCondition(s.descon)
	e3:SetTarget(s.destg)
	e3:SetOperation(s.desop)
	c:RegisterEffect(e3)
end
function s.spcon(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	return c:IsPreviousLocation(LOCATION_SZONE) and c:IsPreviousPosition(POS_FACEDOWN) and c:IsPreviousControler(tp) and c:IsReason(REASON_DESTROY) and Duel.GetTurnPlayer() ~= tp
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, e:GetHandler(), 1, 0, 0)
end
function s.spop(e, tp, eg, ep, ev, re, r, rp)
	if e:GetHandler():IsRelateToEffect(e) then
		Duel.SpecialSummon(e:GetHandler(), 0, tp, tp, false, false, POS_FACEUP)
	end
end
function s.descon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() ~= tp
end
function s.filter(c)
	return c:IsFacedown()
end
function s.destg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	local g = Duel.GetMatchingGroup(s.filter, tp, LOCATION_ONFIELD, 0, nil)
	if g:GetCount() > 0 then
		Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, 1, 0, 0)
	end
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	local g = Duel.GetMatchingGroup(s.filter, tp, LOCATION_ONFIELD, 0, nil)
	if g:GetCount() > 0 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DESTROY)
		local sg = g:Select(tp, 1, 2, nil)
		Duel.Destroy(sg, REASON_EFFECT)
	end
end

