Yae Miko, Grand Narukami Shrine's high priestess who moonlights as a light novel editor, was made available to pull in Genshin Impact's 2.5 update. If you've obtained her, then you're ready to embark on the long arduous journey of building Yae Miko ready for combat. Below are all the resources and their respective locations for Yae Miko's ascension and talent upgrade materials.

　　An electro catalyst character, Yae Miko can be made your main DPS--in that case, get her to level 90--or a sub-DPS. If she'll be support on your team, then level 80 is good enough, especially if you're F2P and are low on resources. If you're a newer player, you'll need to wait until you've unlocked the Inazuma area to level Yae Miko up.

　　

Ascension Materials

Ascension Materials

Ascension	Vajrada Amethysts	Sea Ganoderma	Handguards	Dragonheir's False Fin	Mora
1	1 Vajrada Amethyst Sliver	3	3 Old Handguard	0	20,000
2	2 Vajrada Amethyst Fragment	10	15 Old Handguard	2	40,000
3	6 Vajrada Amethyst Fragment	20	12 Kageuchi Handguard	4	60,000
4	3 Vajrada Amethyst Chunk	30	18 Kageuchi Handguard	8	80,000
5	6 Vajrada Amethyst Chunk	45	12 Famed Handguard	12	100,000
6	6 Vajrada Amethyst Gemstone	60	24 Famed Handguard	20	120,000
TOTAL (level 80)	1 Vajrada Amethyst Sliver 9 Vajrada Amethyst Fragment 9 Vajrada Amethyst Chunk	108	18 Old Handguard 30 Kageuchi Handguard 12 Famed Handguard	26	300,000
TOTAL (level 90)	1 Vajrada Amethyst Sliver 9 Vajrada Amethyst Fragment 9 Vajrada Amethyst Chunk 6 Vajrada Amethyst Gemstone	168	18 Old Handguard 30 Kageuchi Handguard 36 Famed Handguard	46	420,000

Vajrada Amethyst

If you haven't emptied out the Souvenir shops yet, you can purchase a limited amount of Vajrada Amethysts from those locations. To farm for Vajrada Amethysts, you'll need to pick a fight with one of the following normal bosses: the Electro Hypostasis, the Thunder Manifestation (Electro Oceanid), the Bathysmal Vishap Herd, and Primo Geovishap (if infused with electro).

　　The following weekly bosses also drop Vajrada: Dvalin, Childe, Azhada (if infused with electro), and the newest Raiden weekly boss.

　　For farming Yae Miko ascension materials, I'd suggest going for the Bathysmal Vishap Herd boss fight. You will need to fight the vishaps anyways for another ascension material drop--Dragonheir's False Fin--so you might as well kill two birds with one stone.

　　

Sea Ganoderma

Plants that grow near the ocean, Sea Ganodermas are plentiful across Inazuma. My own personal farming recommendation--if you're pressed on time and just want to efficiently farm one location--is to go to the Nazuchi Beach Overlook waypoint and head north to the beach area. There are around 17 Sea Ganodermas in that single location. You can also use the Teyvat Interactive Map to plan your farming routes.

　　Sea Ganoderma recommended farming location--near Nazuchi Beach. Photo credit: Teyvat Interactive Map

Handguards

Handguards are dropped by Nobushi and Kairagi enemies in the open world. Old Handguards by any level, Kageuchi by 40+ level enemies, and Famed by 60+ level enemies. You can find Nobushi enemies scattered all across Inazuma, but the most efficient single location is Jinren Island--nearest waypoint shares the same name. There you can find 17 Nobushi enemies to farm Handguards from.

　　In general, if you are interested in raising popular Inazuma 5-star characters, it's a good idea to regularly farm Handguards since they have a low drop rate. In addition to Yae Miko, Ayaka and Raiden both use Handguards as ascension materials.

　　Handguards recommended farming location--Jinren Island. Photo credit: Teyvat Interactive Map

Dragonheir's False Fin

Dragonheir's False Fins are dropped by normal boss Bathysmal Vishap Herd. This boss fight is located in new area Enkanomiya and is unlocked by completing The Subterranean Trials of Drake and Serpent.

　　Normal Bathysmal Vishap Herd Boss Fight location is under the Dainichi Mikoshi.

Talent Ascension Materials

Talent Level	Handguard	Talent Books	Boss Drops	Other	Mora
1 -> 2	6 Old Handguard	3 Teachings of Light			12,500
2 -> 3	3 Kageuchi Handguard	3 Guides to Light			17,500
3 -> 4	4 Kageuchi Handguard	4 Guides to Light			25,000
4 -> 5	6 Kageuchi Handguard	6 Guides to Light			30,000
5 -> 6	9 Kageuchi Handguard	9 Guides to Light			37,500
6 -> 7	4 Famed Handguard	4 Philosophies of Light	1 The Meaning of Aeons		120,000
7 -> 8	6 Famed Handguard	6 Philosophies of Light	1 The Meaning of Aeons		260,000
8 -> 9	9 Famed Handguard	12 Philosophies of Light	2 The Meaning of Aeons		450,000
9 -> 10	12 Famed Handguard	16 Philosophies of Light	2 The Meaning of Aeons	1 Crown of Insight	700,000
TOTAL (8 -> 9)	6 Old Handguard 22 Kageuchi Handguard 19 Famed Handguard	3 Teachings of Light 21 Guides to Light 22 Philsophies of Light	4 The Meaning of Aeons		952,500
TOTAL (9 -> 10)	6 Old Handguard 22 Kageuchi Handguard 38 Famed Handguard	3 Teachings of Light 21 Guides to Light 38 Philsophies of Light"	6 The Meaning of Aeons	1 Crown of Insight	1,652,500

Talent Books

Teachings of Light, Guide to Light, and Philosophies of Light all drop from the Violet Court domain on Wednesdays, Saturdays, and Sundays.

　　

The Meaning of Aeons

Get this from the new weekly boss, End of the Oneiric Euthymia--the Raiden fight. To unlock this fight, you'll need to have completed Raiden's Act II story quest.

　　

Crown of Insight

Crowns are rare and a coveted commodity in Genshin, so make sure you really, really want to use it on Yae Miko. The general rule of thumb is to crown your main DPS units, so if you're not sure about where Yae fits on your team yet, I would suggest holding off.

　　But if you're committed to Yae, Crown of Insights can be obtained by leveling up the Frostbearing Tree and Sacred Sakura's Favor. Otherwise, you'll need to participate in limited-time events to get Crowns. The upcoming one, Three Realms Gateway Offering (02/17) will offer one Crown in the event shop.