We Need More Powder!

[item=128345] drops from the [npc=95748]

[npc=95748] is in the cave in Katterin's Hideaway
The easiest way to get into this cave is from the north coast
Closest flight point is Stormtorn Foothills
Cave entrance is at 57.3, 25.6

For tomtom users
/way Stormheim 57.3, 25.6 Katterin the Blistered cave

At the end of the fight you will see Svena the Infused for the 2-nd time (1-st time was here: Ancient Knowledge) and she will say

[20:58:06] Svena the Infused says: ONCE AGAIN YOU STEAL FROM THE VRYKUL, OUTSIDER!
[20:58:10] Svena the Infused says: MY TOME HOLDS WISDOM GLEANED FROM A THOUSAND LIFETIMES!
[20:58:14] Svena the Infused says: ATONE FOR YOUR CRIMES! RETURN THE BOOK TO MY PEOPLE!
[20:58:18] Svena the Infused says: PERSIST IN PLUNDERING ITS SECRETS AND YOUR LIFE SHALL BE FORFEIT!

You can buy [item=127904] after this quest from [npc=28725] in dalaran

---

Here is my main Legion Alchemy post: [spell=201697]
You can find more info about the profession there.

We Need More Powder! quest video: https://www.youtube.com/watch?v=a6Ret589rVc

Full quest chain under the spoiler.
You can see what kind of reagents you will need for the following quests and how far you are in the storyline.

Spoiler

ID

Quest

Lvl

Zone

Note

Video

1

Get Your Mix On

100

[zone=7502]

[spell=201697] & Mana, HP, Rej

https://www.youtube.com/watch?v=FEYiNUNVmQY

2

Missing Shipments

100

Azsuna

https://www.youtube.com/watch?v=1BgESn0tvzA

3

A Mysterious Text

100

Azsuna

https://www.youtube.com/watch?v=3-SAIRD4ypY

4

There's a Scribe for That

100

[zone=7502]

https://www.youtube.com/watch?v=yXSEKpsAkbQ

5

Ancient Knowledge

100

[zone=7502]

Fun cutscene

https://www.youtube.com/watch?v=zyAO7gjDPwU

6

A Dormant Burner

100

[zone=7502]

https://www.youtube.com/watch?v=jvQZQ_pYe-I

7

Ley Hunting

100

Azsuna

[item=127901]

https://www.youtube.com/watch?v=SEcaYftyG3g

8

Eye of Azshara: Put a Cork in It

102

[zone=8040]

https://www.youtube.com/watch?v=Aej6EltdMnc

9

Furbolg Firewater

102

Val'sharah

[item=127902] +10% stats tree

https://www.youtube.com/watch?v=vVkfnwHeMr4

10

Flasking for a Favor

104

Highmountain

Need 60xFoxflower with you

https://www.youtube.com/watch?v=8-OlTqCD_0A

11

Thanks for Flasking

104

Highmountain

[item=127903]

https://www.youtube.com/watch?v=kYVMmqV1g6E

12

Neltharion's Lair: Potent Powder

106

[zone=7546]

https://www.youtube.com/watch?v=4z_5Ert0z_4

13

We Need More Powder!

106

Stormheim

[item=127904] Invisability

https://www.youtube.com/watch?v=a6Ret589rVc

14

Forlorn Filter

108

Val'sharah

https://www.youtube.com/watch?v=v9WcYj3n69c

15

Mending the Filter

108

Val'sharah

https://www.youtube.com/watch?v=OWetMaUxp4w

16

Trading for Dreams

108

Val'sharah

Need 5xDreamleaf with you

https://www.youtube.com/watch?v=Cj99rudMM6s

17

Return the Filter

108

Val'sharah

2 Recipes: +Speed 150%, Transmutation

https://www.youtube.com/watch?v=-cqaMZSKXPw

18

A Fragile Crucible

110

Suramar

https://www.youtube.com/watch?v=CGNOzXF0tOU

19

Lining the Crucible *

110

[zone=7502]

https://www.youtube.com/watch?v=pHu3vC2zxHQ

20

Vault of the Wardens: Demon's Bile **

110

[zone=7787]

[item=127906] 815

https://www.youtube.com/watch?v=8ZzYQgb2X_w

21

Vault of the Wardens: Bendy Glass Tubes

110

[zone=7787]

4 Recipes: Mana, Armor, Melee, rdd

https://www.youtube.com/watch?v=o6VJgzSWbw4

22

Going Underground

110

The Underbelly

https://www.youtube.com/watch?v=xsdbUVbqz4Y

23

The Price of the Black Market

110

The Underbelly

Fun quest Khadgar hair

https://www.youtube.com/watch?v=vNTtjUJUY3o

24

An Imprecise Burette

110

[zone=7502]

https://www.youtube.com/watch?v=rhZ_qCuNVCM

25

Calibration Experts

110

World

or Calibration Experts

https://www.youtube.com/watch?v=U7-sXmaTIPg

26

Testing the Calibration ***

110

[zone=7502]

Rank1 Strength, Intellect, Agility, Stamina

https://www.youtube.com/watch?v=7zESjhm5fdg

27

Channeling Our Efforts

110

[zone=7502]

https://www.youtube.com/watch?v=LfeKZUbB0x4

28

Halls of Valor: The Prime Ingredient

110

[zone=7672]

[item=127933]

https://www.youtube.com/watch?v=jdRoDtzKxx8

29

Maw of Souls: A Hope in Helheim

110

[zone=7812]

[item=127932]

https://www.youtube.com/watch?v=cd4nB5f55fE

30

Black Rook Hold: Heavy, But Helpful

110

[zone=7805]

[item=127930]

https://www.youtube.com/watch?v=XF7uEQvmWuE

31

The Emerald Nightmare: Rage Fire

110

[zone=8026]

https://www.youtube.com/watch?v=_dALakrwq-c

32

In With the New

110

[zone=7502]

[item=127915]

https://www.youtube.com/watch?v=JCHg1x25bbk

* Need 2xFelwort, 1x[item=124124], 1xFelhide, 100xYseralline Seed
** Don’t forget to take [item=127904] with you. You need to use it near the closed door after [npc=96015] 2-nd floor
***You need to craft 10x[item=127910] & 10x[item=127909] & 10x[item=127908] & 10x[item=127907] Can just buy them from AH

I kinda feel like an ass for killing Katterin. She's in a cave minding her own business, and she isn't even a bad guy. We kill her just to steal her stuff?

You need to kill an NPC called Katterin the Blistered in order to get the item for the quest; this NPC is found inside a cave, up a ramp partway up the mountain. She is not underwater, nor is she at the very top of the mountain.

Here are some screenshots showing how to get to her cave if you start at the ocean:

1. Image 1: start at 56.6, 21.8 in Stormheim and go up the ramp as shown by the arrows. Note that there's a second path along the shore that leads up to the ship (second path not visible in this image); do not take the second path.

2. Image 2: here I am partway up the ramp; the cave is visible from here if you tilt the camera enough. You should see the ship to your right (don't go to the ship or anything; just use it as a landmark).

3. Image 3: follow the arrows into the cave. (Another view from a slightly different angle here).

I hope this helps.