Junk
When an opponent's monster declares a direct attack: You can Special Summon this card from your hand. Once per turn, during either player's turn: You can have this card gain 300 DEF until the end of this turn.
local s, id, o = GetID()
function s.initial_effect(c)
	--spsummon
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 1))
	e2:SetCategory(CATEGORY_DEFCHANGE)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_MZONE)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e2:SetHintTiming(TIMING_DAMAGE_STEP)
	e2:SetCountLimit(1)
	e2:SetCondition(aux.dscon)
	e2:SetOperation(s.defup)
	c:RegisterEffect(e2)
end
function s.spcon(e, tp, eg, ep, ev, re, r, rp)
	local at = Duel.GetAttacker()
	return at:IsControler(1 - tp) and Duel.GetAttackTarget() == nil
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
	local c = e:GetHandler()
	if chk == 0 then
		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
	end
	Duel.ConfirmCards(1 - tp, c)
	Duel.ShuffleHand(tp)
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, c, 1, 0, 0)
end
function s.spop(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	if not c:IsRelateToEffect(e) then
		return
	end
	Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP)
end
function s.defup(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_DEFENSE)
	e1:SetValue(300)
	e1:SetReset(RESET_EVENT + RESETS_STANDARD + RESET_PHASE + PHASE_END)
	c:RegisterEffect(e1)
end


Junk
When an opponent's monster declares a direct attack: You can Special Summon this card from your hand. Once per turn, during either player's turn: You can have this card gain 300 DEF until the end of this turn.
-- Junk
local s, id, o = GetID()
function s.initial_effect(c)
	--spsummon
	local e1 = Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id, 0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 1))
	e2:SetCategory(CATEGORY_DEFCHANGE)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_MZONE)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e2:SetHintTiming(TIMING_DAMAGE_STEP)
	e2:SetCountLimit(1)
	e2:SetCondition(aux.dscon)
	e2:SetOperation(s.defup)
	c:RegisterEffect(e2)
end
function s.spcon(e, tp, eg, ep, ev, re, r, rp)
	local at = Duel.GetAttacker()
	return at:IsControler(1 - tp) and Duel.GetAttackTarget() == nil
end
function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
	local c = e:GetHandler()
	if chk == 0 then
		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and c:IsCanBeSpecialSummoned(e, 0, tp, false, false)
	end
	Duel.ConfirmCards(1 - tp, c)
	Duel.ShuffleHand(tp)
	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, c, 1, 0, 0)
end
function s.spop(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	if not c:IsRelateToEffect(e) then
		return
	end
	Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP)
end
function s.defup(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_DEFENSE)
	e1:SetValue(300)
	e1:SetReset(RESET_EVENT + RESETS_STANDARD + RESET_PHASE + PHASE_END)
	c:RegisterEffect(e1)
end

