So I've been messing around with Blastoise a bit, got to Master Ball tier with it and played till I got in the top 7k. Still need a lot more testing with it against higher ranked players obviously, but something I really like about it compared to Cloyster is that it can actually survive Special Attacks, so I've been able to win several games by just Shell Smashing against something weak like Choice Specs Dragapult Shadow Ball AFTER Stealth Rock damage (watch out for Dynamax in that particular match-up tho lol). It was also neat when I got into Torrent Range, because then Blastoise would just obilerate everything after a boost rofl.
My main issue with it though is that its a lot more reliant on Dynamaxing than Cloyster is since it has much lower BP moves (unless you wanna roll the dice with Hydro Pump lol). And as a Dynamaxer, while +2 LO Blastoise DOES do a crap ton of damage, don't be expecting to deal with blows very well on its own.
Here's the set I've been using. I do think its still gonna compete with Cloyster (who I still think will be better overall because it isnt nearly as pressured to Dynamax), but I think theres a good chance this is at least viable.
Blastoise @ Life Orb
Ability: Torrent
EVs: 52 HP / 252 SpA / 204 Spe
Modest Nature
IVs: 0 Atk
- Shell Smash
- Surf
- Ice Beam
- Dark Pulse
This is what I've been using. I'm almost interested in trying physical since it OHKOs Toxapex with +2 Max Mindstorm, and OHKOs Dynamax Togekiss that don't invest in bulk with Max Hailstorm after Stealth Rock damage. (Ice Beam is actually not a gurantee with the special set after Dynamaxing because Togekiss has a lot more special bulk lol).
Also,
cant say brought up maybe trying Hyper Beam over Dark Pulse since it gurantees a OHKO on max HP Rotoms without Stealth Rock, and the speed drop could be useful in those times you're forced to Dynamax without a boost (which, while a bummer, I was impressesd with how much Torrent Max Geyser was still doing lol).