First of all huge props on the team Gamester, Euthanasia was a masterpiece and this likewise. The synergy is incredible and Tickle Wobbuffet with Dugtrio is massively underrated to win the weather war and take out specific threats.
The Immortal Almighty God Scarlequin however does have one suggestion, take it with a pinch of salt if you dislike it, when I was laddering with the team I found myself sweeping with Volcarona the vast majority of games rather than Venusaur.
After thinking about synergy I believe WEAVILE and your original Volcarona would work well over Victini and Venusaur.
Weavile allows you to pursuit trap threats that have been Tickled by Wobuffet, either if they are Aerial or Dugtrio is dead. Low Kick would allow you to one shot Tyranitar again aiding in the weather war, also one shotting Mamowsine, Terrakion and without doing calcs gives you a method to severely damage Balloon Heatran. Ice Shard would revenge outrage locked Dragons or dragons that have got out of control, which is particularly relevant for Specially Defensive Dragonite which walls Volcaronas Bug/Fire Coverage. Ice Shard is also amazing for the Therian formes which can be problematic if you somehow lose the weather war. Final moveslot goes to Ice Punch to destroy Dragons without boosts and Gliscor/Non Scarfed Therians, as well as being your most powerful attack.
The Bullet Punches and Mach Punches that give Weavile issues are walled by Forretress and Volcarona
Set:
Weavile @ Life Orb/Choice Band
Ice Shard
Pursuit
Low Kick
Ice Punch
32 HP/252 Atk/224 Spd Jolly Nature
If you did test with this I would change HP Ice on Dugtrio back to Memento because I think HP Ice is too gimmicky.
Night Slash/Punishment are options over Ice Punch for CM Reuniclus and Jellicent
Ive realised this leaves you without a water resist if you lose the weather war which is a problem but thats what Sunny Day is for on Tales right
Amazing team dude, and let me know what you thought of the suggestion
Peace out
The Eternal Immortal God Scarlequin
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