Yamask (Galar) in Inclement Emerald

Ground / Ghost — where to catch it, what it learns, and how it differs from the official games.

Compared with the official games

Against the base species it is built from:

Stats Attack 30 → 55, Sp. Atk 55 → 30
Type Ghost → Ground / Ghost
Abilities gains Wandering Spirit and loses Mummy

Compared against present-day official data. The Fairy type and hidden abilities arrived after Pokémon Emerald, so a difference here can belong to the series rather than to this hack.

Other changes in this hack

Egg moves: Memento
Move tutors: Snatch, Mud-Slap, Ominous Wind, Iron Defense, Zen Headbutt, Swagger, Role Play, Trick, Double-Edge, Earth Power, Toxic Spikes, Nasty Plot, Hex, Poltergeist
Evolves into Runerigus at Level 0

Yamask (Galar) in other guides

The same Pokémon, as 4 other hacks change it:

Emerald Rogue Radical Red Elite Redux Emerald Imperium

Where to find Yamask (Galar)

Not found in the wild — evolve or trade for it.

Level-up moves

Lv	Move	Type	Cat	Pow	Acc	PP
1	Astonish An attack that may shock the foe into flinching.	Ghost	Phys	30	100	15
1	Protect Evades attack, but may fail if used in succession.	Normal	Stat	—	—	10
4	Haze Creates a black haze that eliminates all stat changes.	Ice	Stat	—	—	30
8	Night Shade Inflicts damage identical to the user's level.	Ghost	Spec	1	100	15
12	Disable Psychically disables one of the foe's moves.	Normal	Stat	—	100	20
16	Brutal Swing Violently swings around to hurt everyone nearby.	Dark	Phys	60	100	20
20	Crafty Shield Evades status moves for one turn.	Fairy	Stat	—	—	10
24	Hex Does double damage if the foe has a status problem.	Ghost	Spec	65	100	10
28	Mean Look Fixes the foe with a mean look that prevents escape.	Normal	Stat	—	—	5
32	Slam Slams the foe with a long tail, vine, etc.	Normal	Phys	80	75	20
36	Curse A move that functions differently for GHOSTS.	Ghost	Stat	—	—	10
40	Shadow Ball Hurls a black blob that may lower the foe's Sp. Def.	Ghost	Spec	80	100	15
44	Earthquake A powerful quake, but has no effect on flying foes.	Ground	Phys	100	100	10
48	Guard Split Averages changes to Defense and Sp. Def with the foe.	Psychic	Stat	—	—	10
48	Power Split Averages changes to Attack and Sp. Atk with the foe.	Psychic	Stat	—	—	10
52	Destiny Bond If the user faints, the foe is also made to faint.	Ghost	Stat	—	—	5

* a legal move, just moved to level-up · ** new to this hack

TMs & HMs (20)

#	Move · where to get it	Type	Pow
TM04	Calm Mind Mossdeep City Gym	Psychic	—
TM06	Toxic Not placed on any map — the source doesn't say where this one comes from	Poison	—
TM10	Hidden Power Fortree City — House 2	Normal	60
TM17	Protect Lilycove City — Department Store 4F	Normal	—
TM18	Rain Dance Not placed on any map — the source doesn't say where this one comes from	Water	—
TM20	Safeguard Lilycove City — Department Store 4F	Normal	—
TM21	Frustration Not placed on any map — the source doesn't say where this one comes from	Normal	1
TM27	Return Fallarbor Town — Cozmo's House	Normal	1
TM29	Psychic Not placed on any map — the source doesn't say where this one comes from	Psychic	90
TM30	Shadow Ball Not placed on any map — the source doesn't say where this one comes from	Ghost	80
TM32	Double Team Route 113	Normal	—
TM42	Facade Petalburg City Gym	Normal	70
TM43	Secret Power Not placed on any map — the source doesn't say where this one comes from	Normal	70
TM44	Rest Lilycove City — House 2	Psychic	—
TM45	Attract Verdanturf Town — Battle Tent Lobby	Normal	—
TM46	Thief Slateport City — Oceanic Museum 1F	Dark	60
TM48	Skill Swap Not placed on any map — the source doesn't say where this one comes from	Psychic	—
TM49	Sleep Talk Fortree City — House 2	Normal	—
TM53	Energy Ball Not placed on any map — the source doesn't say where this one comes from	Grass	90
TM58	Endure Slateport City — Pokemon Fan Club	Normal	—