Singularity
When your opponent Special Summons a monster(s) (except during the Damage Step): You can discard this card and 1 Spell; destroy that monster(s). You can only use this effect of "Singularity Fiend" once per turn.
local s, id, o = GetID()
function s.initial_effect(c)
	--destroy
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetRange(LOCATION_HAND)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1, id)
	e1:SetCondition(s.descon)
	e1:SetCost(s.descost)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
function s.cfilter(c, tp)
	return c:IsSummonPlayer(1 - tp)
end
function s.descon(e, tp, eg, ep, ev, re, r, rp)
	return eg:IsExists(s.cfilter, 1, nil, tp)
end
function s.costfilter(c)
	return c:IsType(TYPE_SPELL) and c:IsAbleToGraveAsCost()
end
function s.descost(e, tp, eg, ep, ev, re, r, rp, chk)
	local c = e:GetHandler()
	if chk == 0 then
		return c:IsAbleToGraveAsCost() and Duel.IsExistingMatchingCard(s.costfilter, tp, LOCATION_HAND, 0, 1, c)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_TOGRAVE)
	local g = Duel.SelectMatchingCard(tp, s.costfilter, tp, LOCATION_HAND, 0, 1, 1, c)
	g:AddCard(c)
	Duel.SendtoGrave(g, REASON_COST)
end
function s.desfilter(c, e, tp)
	return c:IsSummonPlayer(1 - tp) and (not e or c:IsRelateToEffect(e)) and c:IsType(TYPE_MONSTER) and c:IsLocation(LOCATION_MZONE)
end
function s.destg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return eg:IsExists(s.desfilter, 1, nil, nil, tp)
	end
	local g = eg:Filter(s.desfilter, nil, nil, tp)
	Duel.SetTargetCard(eg)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, g:GetCount(), 0, 0)
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	local g = eg:Filter(s.desfilter, nil, e, tp):Filter(Card.IsRelateToChain, nil)
	Duel.Destroy(g, REASON_EFFECT)
end


Singularity
When your opponent Special Summons a monster(s) (except during the Damage Step): You can discard this card and 1 Spell; destroy that monster(s). You can only use this effect of "Singularity Fiend" once per turn.
-- Singularity
local s, id, o = GetID()
function s.initial_effect(c)
	--destroy
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetRange(LOCATION_HAND)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1, id)
	e1:SetCondition(s.descon)
	e1:SetCost(s.descost)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
function s.cfilter(c, tp)
	return c:IsSummonPlayer(1 - tp)
end
function s.descon(e, tp, eg, ep, ev, re, r, rp)
	return eg:IsExists(s.cfilter, 1, nil, tp)
end
function s.costfilter(c)
	return c:IsType(TYPE_SPELL) and c:IsAbleToGraveAsCost()
end
function s.descost(e, tp, eg, ep, ev, re, r, rp, chk)
	local c = e:GetHandler()
	if chk == 0 then
		return c:IsAbleToGraveAsCost() and Duel.IsExistingMatchingCard(s.costfilter, tp, LOCATION_HAND, 0, 1, c)
	end
	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_TOGRAVE)
	local g = Duel.SelectMatchingCard(tp, s.costfilter, tp, LOCATION_HAND, 0, 1, 1, c)
	g:AddCard(c)
	Duel.SendtoGrave(g, REASON_COST)
end
function s.desfilter(c, e, tp)
	return c:IsSummonPlayer(1 - tp) and (not e or c:IsRelateToEffect(e)) and c:IsType(TYPE_MONSTER) and c:IsLocation(LOCATION_MZONE)
end
function s.destg(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return eg:IsExists(s.desfilter, 1, nil, nil, tp)
	end
	local g = eg:Filter(s.desfilter, nil, nil, tp)
	Duel.SetTargetCard(eg)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, g, g:GetCount(), 0, 0)
end
function s.desop(e, tp, eg, ep, ev, re, r, rp)
	local g = eg:Filter(s.desfilter, nil, e, tp):Filter(Card.IsRelateToChain, nil)
	Duel.Destroy(g, REASON_EFFECT)
end

