I've been wanting to try AV Victini since I heard of it, but in practice a lot of teams I tried to build just felt better with Incineroar > Victini.
That said, Victini does fill some pretty cool niches, and it deals with Kartana a lot more reliably than Incineroar so it's definitely worth using on teams where you can fit it.
Basic idea of this team was just to build something balanced that has a few different ways to deal with Incineroar. Between Tapu Fini, Zygarde, and Scrafty, I feel pretty good about it. That same core also helps this team dance around 5 turns of Trick Room in a pinch, although ideally you don't want TR going up vs. this.
Just your standard 252/252/4 Mega Metagross. I decided to run Thunder Punch > Stomping Tantrum for a few reasons. It improves my Charizard Y matchup a bit, since most of my fire switchins have to take damage before attacking it, and can't necessarily grab a quick KO on it. Physical Electric coverage is also just great for taking down bulky Water-types, since they usually prioritize SpD (think CM Fini, Psychic Seed Milotic, Araquanid, etc.).
Pretty much
the EV spread from a recent Smogon Featured Set featuring AV Victini, but with rejigged natures/investments for an extra SpA point. You get to:
- outspeed a -1 Deoxys-A;
- avoid a 2HKO from Landorus-T Earth Power; and
- 2HKO Landorus-T with Glaciate
Blue Flare hits respectably hard (it's basically Overheat without the SpA drop). The next two slots are honestly personal preference. I find myself switching a lot between Incinerate / Psyshock / Thunderbolt - all of which are decent ways to hit Tapu Fini in their own respect. The latter two also make Victini a pretty good Charizard Y check, but burning opponent's berries is pretty valuable functionality. Glaciate is nice speed control, and Ice-type coverage on a Fire-type Pokemon is always great. U-turn is pretty much mandatory for pivoting out of bad matchups, such as vs. Incineroar.
Standard Calm Mind set. I wanted CM > Support so I could have a special-based setup wincon if needed.
Just the classic Misty Seed set. I considered going Whirlwind > Roost, but my matchup vs Trick Room and Kommo-o already feels fine as is. Heat Wave > HP Ice so I have a second option for taking down Kartana / Genesect / Ferrothorn / Scizor.
Pretty much the standard Dragon Dance set but with enough Speed to outpace Jolly Tapu Bulu, so in a pinch I can at least fire off one attack before eating a Wood Hammer. Extreme Speed / Substitute is just a preference thing; I waffle between the two moves quite a bit, but having a priority attack just seemed nice for this team.
Scrafty seems like a bit of a relic from the past at this point, but I still wanted Fake Out utility to deal with Trick Room and just to keep momentum up. I also feel a bit safer using Scrafty now that Mega Gengar isn't around to keep it trapped in vs. Intimidate spam. It also deals with Zygarde which is nice.