Volt Switch Movement! (#UnovaForSmash)さんのイラストまとめ

ETM64: Endure (TM/TR, SwSh)
"The user endures any attack with at least 1 HP. Its chance of failing rises if it is used in succession." - BW-BDSP
Passive defense buff that prevents it from getting KO'ed. Might be a tad hard to translate over.
(Images: SM, PMD3, Adventures, anime)

ETM63: Eerie Impulse (TM/TR, SwSh)
"The user's body generates an eerie impulse. Exposing the target to it harshly lowers the target's Sp. Atk stat." - XY-SwSh
An energy wave shaped projectile. Could be up b's accompanying effect?
(Images: SM, SwSh, SuperMD, Masters)

ETM61: Secret Power (Transfer from gen 6 to gen 7)
"The user attacks the target with a secret power. Its added effects vary depending on the user's environment." - BW(+2)
A bit too inconsistent for Smash implementation imo.
(Images: SM, anime, Adventures, Phantom Thief Pokemon 7)

ETM60: Flash (Transfer from gens 5-6 to 7)
"The user flashes a bright light that cuts the target's accuracy. It can also be used to illuminate caves." - BW(+2)
Could be neat in an Adventure mode cutscene, or taunt.
(Images: XY, Battle Revolution, anime, Gotta Catch 'Em All manga)

ETM59: Cut (Transfer from gens 5-6 to 7)
"The target is cut with a scythe or a claw. It can also be used to cut down thin trees." - BW(+2)
A classic. Could be used for some disjointed normals's effect, maybe?
(Images: SwSh, anime, Battle Revolution, Adventures [manga])

ETM54: Knock Off (tutoring-only)
"The user slaps down the target's held item, preventing that item from being used in the battle." - BW(+2)
A slam/slap that knocks the opponent's item away. Could be any of its normals?
(Images: anime, Adventures [manga], XD, Battle Revolution)

ETM49: Speed Swap (Breeding-only move)
"The user exchanges Speed stats with the target." - SM-SwSh
Self-explanatory. Not really fit for Smash due to balance concerns. Becomes TM/transfer only in gen 8.
(Images: SwSh, SM, preSwSh 'mon icons [sole potential parent: Alolan Raichu])

Potential parent

Dunsparce.
This is not a PMD3 joke, that's the only one lol.

ETM46: Iron Tail (Breeding/Tutoring)
"The target is slammed with a steel-hard tail. It may also lower the target's Defense stat." - BW(+2)
Oh hey it's Pikachu's close-range attack in PokePark 2! Name is self-explanatory.
(Images: XY, SuperMD, Generations, Victini movie manga)

ETM45: Ion Deluge (Breeding-only move)
"The user disperses electrically charged particles, which changes Normal-type moves to Electric-type moves" - XY-LGPE
Basically an electric field. Don't think that'd make the cut to Smash.
(Images: XY, SM, anime, SuperMD)