Time to give my thoughts on this shifts !
Amoonguss
Great Pokemon overall even if I think that with Venusaur-Mega in the same tier, is kinda though for Amoonguss to shine as much as before. But Spore and Regenerator or always really good things.
Diancie-Mega
This is probably the biggest change we got. Diancie-Mega is an absolutely amazing threat which can grant a plethora of utility (Stealth Rocks, Mixed Wallbreaker, Lame Game Sweeper with Rock Polish, Stallbreaker with Sub+Endeavor or just straight up set-up Sweeper with Sharpen and Calm Mind).
I think it's still too early to tell if whether or not this Pokemon is broken or unhealthy for the tier but it sure put a lot of pression on the Underused. There is a huge surge of Pokemon to deal with Diancie-Mega like Flash Cannon Klefki, Bronzong, Empoleon with Shuca Berry.
I personally have tested a strange CM Diancie-Mega which can mess around with Stall pretty easily :
Diancie-Mega @ Diancite
Ability: Magic Bounce
EVs:
252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Calm Mind
- Diamond Storm
- Moonblast
- Earth Power
• 252 Atk Diancie-Mega Diamond Storm vs. 252 HP / 252+ Def Blissey: 346-408 (48.4 - 57.1%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
• 4 SpA Diancie-Mega Moonblast vs. 252 HP / 4 SpD Quagsire: 219-258 (55.5 - 65.4%) -- guaranteed 2HKO after Leftovers recovery
• +1 4 SpA Diancie-Mega Earth Power vs. 248 HP / 252+ SpD Filter Aggron-Mega: 183-216 (53.3 - 62.9%) -- guaranteed 2HKO
Really fun to use. You basically just have to weaken Aggron-Mega and then it's trully easy to punch holes into fat and defensive teams.
Mamoswine
Mamo finnaly came back to us and it's cool. It's as good as it was in the past with 2 amazing and complementary STAB. The rise of Pokemon like Bronzong does not help it but it's still a really good Pokemon especially in HO even if it's not as good vs Volt-Turn than before (with the rise of Gliscor, Electric types like Manectric-Mega and Raikou are becoming much more threatening).
Venusaur-Mega
Like the rise of Serperior, I think nobody had anticipated the drop of this big boy in Underused. I've tested it and it's really really
REALLY good in balance or fat Bulky Offense. It's amazing Bulk coupled with this typing and ability Thick Fat allow it to check a lot of Pokemon with a lot of ease and even if it lacks of Recovery (only 8 PP on Synthesis which is kinda unfortunate) it's still does an amazing job.
I fell in love with the SD set which I think is one of its more underrated set :
Venusaur-Mega @ Venusaurite
Ability: Thick Fat
EVs: 120 HP / 252 Atk / 136 Spe
Adamant Nature
- Swords Dance
- Synthesis
- Petal Blizzard
- Earthquake
136 Speed allow it to outspeed Adamant Max Speed Scizor and Jolly Crawdaunt. The remaining EV are put in Atk and HP.
Really good Win Con overall that mess around with the actual Metagame.
EDIT for Venusaur-Mega :
I just tried out Growth Venusaur-Mega and it's even dumber than the Swords Dance one.
Venusaur-Mega @ Venusaurite
Ability: Thick Fat
EVs: 208 HP / 252 SpA / 48 Spe
Modest Nature
IVs: 0 Atk
- Growth
- Synthesis
- Giga Drain
- Sludge Bomb
48 Speed allow it to outspeed Suicune. You can put 56 to outspeed Adamant Crawdaunt but tbh it's not worthy since Venusaur-Mega doesn't give a shit about. With this set, Venusaur-Mega can put a lot of pressure on Stall team because even things like Crobat can be pressure (Stealth Rocks and Sludge Bomb which does about 25-30% to max HP Crobat).
Some Examples :
Didn't save the replay too bad. But basically, I put some pressure on Crobat with Bronzong Stealth Rock & Gyro Ball + Scarf Pursuit Krook. When I got rid off it, it opened the dours to Venusaur-Mega which just have too Growth / Synthesis then Sweep.
Another example which shows how good Venusaur-Mega can be, it takes some hits with ease and the oppo can't do anything. Scizor was a bad answer since I have Tentacruel + Flame Body Moltres :
Venusaur-Mega bae
Other Pokemon which became better with this shifts :
Cobaltion and Lucario enjoy the rise of Gliscor. Steelium Z is atm their best set because it allows them to break through Amoonguss and Venusaur-Mega.
• +2 252 Atk Cobalion Corkscrew Crash (160 BP) vs. 212 HP / 0 Def Venusaur-Mega: 339-400 (95.7 - 112.9%) -- 75% chance to OHKO
• +2 252 Atk Cobalion Corkscrew Crash (160 BP) vs. 252 HP / 184 Def Amoonguss: 432-508 (100 - 117.5%) -- guaranteed OHKO after Black Sludge recovery
• +2 252 Atk Lucario Corkscrew Crash (175 BP) vs. 212 HP / 0 Def Venusaur-Mega: 424-501 (119.7 - 141.5%) -- guaranteed OHKO
• +2 252 Atk Lucario Corkscrew Crash (175 BP) vs. 252 HP / 184 Def Amoonguss: 540-636 (125 - 147.2%) -- guaranteed OHKO after Black Sludge recovery
Scarf Krook is really good right now. It can Pursuit Trap Pokemon like Bronzong and Chandelure which became more common but it can also threaten Steel type like Empoleon and Klefki.
Electric Types Pokemon loved the rise of Gliscor because they are now free to run HP Grass instead of HP Ice which make them very tricky to face because you can't send anymore your Swampert, Quagsire, Rhyperior or Mamoswine for free versus them.
Steel Types are more than ever a necessity when you build a team if you didn't want to be rekt by Diancie-Mega. Bronzong has become in few days a staple in a lot of team because of it's Steel Type, it's ability Levitate and it's acces to Stealth Rock.
With the rise of Steel Types, Fire Types like CM Chandelure and Flynium-Z Moltres became even better. Chandelure can come on Bronzong with ease and Sub on it while Moltres can threten a huge part of the Underused thanks to its typing.
TL;DR : I really like this shifts, it brings some massive and deep changes to the tier. Even if some Pokemon may be a little bit too much to handle (*cough* Diancie-Mega *cough-cough*) it's nice to see the Underused changing.