--ドリーム・シャーク
--Dream Shark
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--The first time it would be destroyed by battle, it is not
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_COUNT)
	e1:SetCountLimit(1)
	e1:SetValue(s.valcon)
	c:RegisterEffect(e1)
	--Special summon itself from the hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_HAND)
	e2:SetCountLimit(1,{id,0})
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--Special summon itself from the GY if an effect would inflict damage
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e4:SetType(EFFECT_TYPE_QUICK_O)
	e4:SetCode(EVENT_CHAINING)
	e4:SetRange(LOCATION_GRAVE)
	e4:SetCountLimit(1,{id,1})
	e4:SetCondition(aux.damcon1)
	e4:SetTarget(s.damtg)
	e4:SetOperation(s.damop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_HEROIC}
function s.valcon(e,re,r,rp)
	return (r&REASON_BATTLE)~=0
end
function s.cfilter(c)
	return c:IsFacedown() or not c:IsAttribute(ATTRIBUTE_WATER)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return not Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE,0,1,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.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,0,LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
end
function s.damtg(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.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,0,LOCATION_GRAVE)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and Duel.SpecialSummonStep(c,0,tp,tp,false,false,POS_FACEUP) then
		--Decrease DEF by 1000
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_UPDATE_DEFENSE)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		e1:SetValue(-1000)
		c:RegisterEffect(e1,true)
		--Banish it if it leaves the field
		local e2=Effect.CreateEffect(c)
		e2:SetDescription(3300)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
		e2:SetCode(EFFECT_LEAVE_FIELD_REDIRECT)
		e2:SetValue(LOCATION_REMOVED)
		e2:SetReset(RESET_EVENT|RESETS_REDIRECT)
		c:RegisterEffect(e2,true)
		--Take no damage from the activated effect
		local cid=Duel.GetChainInfo(ev,CHAININFO_CHAIN_ID)
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_FIELD)
		e3:SetCode(EFFECT_CHANGE_DAMAGE)
		e3:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
		e3:SetTargetRange(1,0)
		e3:SetLabel(cid)
		e3:SetValue(s.damval)
		e3:SetReset(RESET_CHAIN)
		Duel.RegisterEffect(e3,tp)
	end
	Duel.SpecialSummonComplete()
end
function s.damval(e,re,val,r,rp,rc)
	local cc=Duel.GetCurrentChain()
	if cc==0 or (r&REASON_EFFECT)==0 then return val end
	local cid=Duel.GetChainInfo(0,CHAININFO_CHAIN_ID)
	if cid~=e:GetLabel() then return val end
	return 0
end