Mario & Sonic Guy
Old rivalries live on!
Only two Pokemon can have Prankster and Will-O-Wisp though, and I doubt that Mega Banette sees that much attention when Sableye can easily cover the Prankster department without having to waste your single mega evolution slot.One word.. Prankster. It's probably been good before then but prankster WoW is probably when it became more prevalent in the meta since it beats out scarf Pokemon and nullifies their attack down to near harmless levels..
It should be noted, however, that Sableye isn't exactly a sturdy Pokemon, and using Will-O-Wisp to burn its adversary can end up backfiring if the adversary has the Guts ability; of course, only Ursaring can have Guts AND Play Rough, which would wipe out Sableye in one blow, no matter how high its defense value is. Also, Will-O-Wisp can miss, which can be bad for Sableye if its adversary can easily 1-hit KO it while healthy, or has a different status problem.