Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 6 Fiend monsters When a Spell/Trap Card, or monster effect, is activated that includes an effect that Special Summons a monster (Quick Effect): You can detach 1 material from this card; negate the activation, and if you do, destroy that card, then you can make 1 other "D/D" monster you control and this card gain 1800 ATK until the end of this turn. If this card is sent from the field to the GY: You can add 1 "Dark Contract" card from your Deck to your hand.
--ＤＤＤ怒涛大王エグゼクティブ・シーザー
--D/D/D Wave High King Caesar
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon procedure
	Xyz.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsRace,RACE_FIEND),6,2)
	--Negate the activation of an effect that includes Special Summoning
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY+CATEGORY_ATKCHANGE)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_CHAINING)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.negcon)
	e1:SetCost(Cost.DetachFromSelf(1,1,nil))
	e1:SetTarget(s.negtg)
	e1:SetOperation(s.negop)
	c:RegisterEffect(e1)
	--Search 1 "Dark Contract" card
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,2))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(s.thcon)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
	aux.DoubleSnareValidity(c,LOCATION_MZONE)
end
s.listed_series={SET_DD,SET_DARK_CONTRACT}
function s.negcon(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():IsStatus(STATUS_BATTLE_DESTROYED) or not Duel.IsChainNegatable(ev) then return false end
	if not re:IsMonsterEffect() and not re:IsHasType(EFFECT_TYPE_ACTIVATE) then return false end
	return re:IsHasCategory(CATEGORY_SPECIAL_SUMMON)
end
function s.negtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	local rc=re:GetHandler()
	if rc:IsDestructable() and rc:IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,0,0)
	end
end
function s.atkfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_DD)
end
function s.negop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re)
		and Duel.Destroy(eg,REASON_EFFECT)>0 and c:IsRelateToEffect(e) and c:IsFaceup()
		and Duel.IsExistingMatchingCard(s.atkfilter,tp,LOCATION_MZONE,0,1,c)
		and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
		local tc=Duel.SelectMatchingCard(tp,s.atkfilter,tp,LOCATION_MZONE,0,1,1,c):GetFirst()
		if not tc then return end
		Duel.HintSelection(tc,true)
		Duel.BreakEffect()
		--Increase ATK
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetValue(1800)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		c:RegisterEffect(e1)
		local e2=e1:Clone()
		tc:RegisterEffect(e2)
	end
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.thfilter(c)
	return c:IsSetCard(SET_DARK_CONTRACT) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end