Koa'ki
During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When your opponent would Summon a monster(s) (Quick Effect): You can Tribute this card; negate the Summon, and if you do, destroy that monster(s).
local CARD_ID_0 = 36623431 --Iron Core of Koa'ki Meiru

local CARD_ID_0 = 36623431 --Iron Core of Koa'ki Meiru
local s, id, o = GetID()
function s.initial_effect(c)
	aux.AddCodeList(c, CARD_ID_0)
	--cost
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EVENT_PHASE + PHASE_END)
	e1:SetCountLimit(1)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.mtcon)
	e1:SetOperation(s.mtop)
	c:RegisterEffect(e1)
	--disable spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 3))
	e2:SetCategory(CATEGORY_DISABLE_SUMMON + CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EVENT_SUMMON)
	e2:SetCondition(s.condition)
	e2:SetCost(s.cost)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
	local e3 = e2:Clone()
	e3:SetCode(EVENT_FLIP_SUMMON)
	c:RegisterEffect(e3)
	local e4 = e2:Clone()
	e4:SetCode(EVENT_SPSUMMON)
	c:RegisterEffect(e4)
end
function s.mtcon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() == tp
end
function s.cfilter1(c)
	return c:IsCode(CARD_ID_0) and c:IsAbleToGraveAsCost()
end
function s.cfilter2(c)
	return c:IsType(TYPE_MONSTER) and c:IsRace(RACE_ROCK) and not c:IsPublic()
end
function s.mtop(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	Duel.HintSelection(Group.FromCards(c))
	local g1 = Duel.GetMatchingGroup(s.cfilter1, tp, LOCATION_HAND, 0, nil)
	local g2 = Duel.GetMatchingGroup(s.cfilter2, tp, LOCATION_HAND, 0, nil)
	local select = 2
	if g1:GetCount() > 0 and g2:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 1), aux.Stringid(id, 2))
	elseif g1:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 2))
		if select == 1 then
			select = 2
		end
	elseif g2:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 1), aux.Stringid(id, 2)) + 1
	else
		select = Duel.SelectOption(tp, aux.Stringid(id, 2))
		select = 2
	end
	if select == 0 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_TOGRAVE)
		local g = g1:Select(tp, 1, 1, nil)
		Duel.SendtoGrave(g, REASON_COST)
	elseif select == 1 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_CONFIRM)
		local g = g2:Select(tp, 1, 1, nil)
		Duel.ConfirmCards(1 - tp, g)
		Duel.ShuffleHand(tp)
	else
		Duel.Destroy(c, REASON_COST)
	end
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return tp ~= ep and Duel.GetCurrentChain() == 0
end
function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return e:GetHandler():IsReleasable()
	end
	Duel.Release(e:GetHandler(), REASON_COST)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.SetOperationInfo(0, CATEGORY_DISABLE_SUMMON, eg, eg:GetCount(), 0, 0)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, eg, eg:GetCount(), 0, 0)
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	Duel.NegateSummon(eg)
	Duel.Destroy(eg, REASON_EFFECT)
end


Koa'ki
During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When your opponent would Summon a monster(s) (Quick Effect): You can Tribute this card; negate the Summon, and if you do, destroy that monster(s).
-- Koa'ki
local CARD_ID_0 = 36623431 --Iron Core of Koa'ki Meiru
local s, id, o = GetID()
function s.initial_effect(c)
	aux.AddCodeList(c, CARD_ID_0)
	--cost
	local e1 = Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EVENT_PHASE + PHASE_END)
	e1:SetCountLimit(1)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.mtcon)
	e1:SetOperation(s.mtop)
	c:RegisterEffect(e1)
	--disable spsummon
	local e2 = Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id, 3))
	e2:SetCategory(CATEGORY_DISABLE_SUMMON + CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EVENT_SUMMON)
	e2:SetCondition(s.condition)
	e2:SetCost(s.cost)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
	local e3 = e2:Clone()
	e3:SetCode(EVENT_FLIP_SUMMON)
	c:RegisterEffect(e3)
	local e4 = e2:Clone()
	e4:SetCode(EVENT_SPSUMMON)
	c:RegisterEffect(e4)
end
function s.mtcon(e, tp, eg, ep, ev, re, r, rp)
	return Duel.GetTurnPlayer() == tp
end
function s.cfilter1(c)
	return c:IsCode(CARD_ID_0) and c:IsAbleToGraveAsCost()
end
function s.cfilter2(c)
	return c:IsType(TYPE_MONSTER) and c:IsRace(RACE_ROCK) and not c:IsPublic()
end
function s.mtop(e, tp, eg, ep, ev, re, r, rp)
	local c = e:GetHandler()
	Duel.HintSelection(Group.FromCards(c))
	local g1 = Duel.GetMatchingGroup(s.cfilter1, tp, LOCATION_HAND, 0, nil)
	local g2 = Duel.GetMatchingGroup(s.cfilter2, tp, LOCATION_HAND, 0, nil)
	local select = 2
	if g1:GetCount() > 0 and g2:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 1), aux.Stringid(id, 2))
	elseif g1:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 0), aux.Stringid(id, 2))
		if select == 1 then
			select = 2
		end
	elseif g2:GetCount() > 0 then
		select = Duel.SelectOption(tp, aux.Stringid(id, 1), aux.Stringid(id, 2)) + 1
	else
		select = Duel.SelectOption(tp, aux.Stringid(id, 2))
		select = 2
	end
	if select == 0 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_TOGRAVE)
		local g = g1:Select(tp, 1, 1, nil)
		Duel.SendtoGrave(g, REASON_COST)
	elseif select == 1 then
		Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_CONFIRM)
		local g = g2:Select(tp, 1, 1, nil)
		Duel.ConfirmCards(1 - tp, g)
		Duel.ShuffleHand(tp)
	else
		Duel.Destroy(c, REASON_COST)
	end
end
function s.condition(e, tp, eg, ep, ev, re, r, rp)
	return tp ~= ep and Duel.GetCurrentChain() == 0
end
function s.cost(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return e:GetHandler():IsReleasable()
	end
	Duel.Release(e:GetHandler(), REASON_COST)
end
function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
	if chk == 0 then
		return true
	end
	Duel.SetOperationInfo(0, CATEGORY_DISABLE_SUMMON, eg, eg:GetCount(), 0, 0)
	Duel.SetOperationInfo(0, CATEGORY_DESTROY, eg, eg:GetCount(), 0, 0)
end
function s.operation(e, tp, eg, ep, ev, re, r, rp)
	Duel.NegateSummon(eg)
	Duel.Destroy(eg, REASON_EFFECT)
end

