That Victini sounds devastating... V-Create spamming will beat full teams if they lack priority.
Zap Cannon Eelektross is gimmicky but can work, anyway I think your opponent could've done something else. White Herb Sceptile, as opposed to the Eel, does sound like a big threat, I wonder why it isn't used much seeing that UU has many gimmicky things.
So I started playing with a Hail team just now, mainly because I didn't want to screw up with my SubSalac Hera team, but also for funsies. Since Snover is extremely weak and frankly the Protect+Leech Seed set isn't very appealing to me, I wanted to try out something different, so I went with the Focus Sash set.
- Grass Knot
/ Giga Drain
- Ice Shard
Trait: Snow Warning
EVs: 92 Atk / 252 SpA / 164 Spe
Nature: Mild (+SpA, -Def)
Blizzard+Ice Shard hits many leads hard, and I'm guaranteed I'll survive a hit. Additionally, it's nice to screw with Crobat leads that expect the SubSeed set and opt for Taunt instead of Brave Bird / U-Turn, effectively giving me a free kill. Hidden Power Ground to do something to Fire-types, Hidden Power Fire is mainly for Bronzong and other Snover leads.
Per White Queen's suggestion, I changed the Hidden Power place for Protect, to prevent Fake Out users from breaking the Sash.
While it may seem like a pushover without Eviolite, it's pretty fun watching little Snover getting me a kill more than half the matches I've played (though they haven't been much), and Ice Shard can pick off weakened things later if you decided not to sac it for some reason.
164 EVs give me the jump on Adamant/Impish Swampert, the rest goes into maximizing Special Attack first and then Attack