>>36376508It's a good but extreme niche move, some water types can use it against Toxapex or generic coverage for Water types since it does as much as HP Grass and Electric, but basically due to its extremely limited distribution only Golduck and Vaporeon can benefit from it.
It's best user so far is Jolteon, came up with what initially was a meme set but ended being alright for this move:
AutisticScreeching (Jolteon) (M) @ Psychium Z
Ability: Volt Absorb
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature / Timid Nature
IVs: 0 Atk
- Thunderbolt
- Shadow Ball
- Synchronoise
- Hidden Power [Ice] / Volt Switch
252+ SpA Jolteon Shattered Psyche vs. 248 HP / 144 SpD Venusaur-Mega: 306-362 (84.2 - 99.7%) -- guaranteed 2HKO
252+ SpA Jolteon Shattered Psyche vs. 0 HP / 0 SpD Tapu Koko: 256-302 (91.1 - 107.4%) -- 43.8% chance to OHKO (Tapu Koko is faster however)
Would advice using Modest nature still, one of the few cases Jolteon can afford it.
They have buffed Synchronoise to 120BP probably to compense the situational utility of this move and rarity, but you'd be surprised to hear the Z-version of Synchronoise has 190BP, that's quite a lot for the Z-standards.
Am I saying Jolteon is OU material? No, but doesn't mean it's not fun to use there or in lower tiers able to damage other Grass type and Electric switch ins or naturally Sp.Def and AV Fighting types.