Serebii:
Pokémon Bank - New Gift
It has been announced that the Johto Starters are to be distributed this year with their Hidden Abilities. From February 27th 2015 to November 30th 2015, if you access Pokémon Bank, you will receive Meganium, Typhlosion and Feraligatr with their Hidden Abilities of Leaf Guard, Flash Fire and Sheer Force respectively. These are distributed through the Pokémon Link feature nto Pokémon X, Y, Omega Ruby or Alpha Sapphire with a limit of 1 of each per Pokémon Bank
The only one with a glimpse of viability in OU would be Feraligatr and even then it will face competition with (Mega) Gyarados as a Dragon Dancer. Let's see how well it performs in terms of damage output:
+1 252 Atk Life Orb Sheer Force Feraligatr Waterfall vs. 0 HP / 0 Def Mew: 286-337 (83.8 - 98.8%) -- guaranteed 2HKO
+1 192+ Atk Gyarados Waterfall vs. 0 HP / 0 Def Mew: 201-237 (58.9 - 69.5%) -- guaranteed 2HKO
+1 252+ Atk Life Orb Gyarados Waterfall vs. 0 HP / 0 Def Mew: 273-321 (80 - 94.1%) -- guaranteed 2HKO
+1 252+ Atk Mold Breaker Mega Gyarados Waterfall vs. 0 HP / 0 Def Mew: 246-289 (72.1 - 84.7%) -- guaranteed 2HKO
...well, Jolly Feraligatr hits harder than Adamant base Gyarados while hitting the nice speed of 420, outpacing everything with 135 base Speed or lower (the only difference with Jolly Gyarados is that Gyara can also outspeed Mega Sceptile and Mega Beedrill). It also has Low Kick for a high chance (68%) of 2HKOing Ferrothorn after SR without any boost and Aqua Jet for faster Scarf users and the aforementioned Mega Beedrill.
Feraligatr also learns Swords Dance for wallbreaking duties. The most important calc is:
+2 252+ Atk Life Orb Sheer Force burned Feraligatr Waterfall vs. 252 HP / 252+ Def Mega Sableye: 129-152 (42.4 - 50%) -- 90.2% chance to 2HKO after Stealth Rock
Other walls are easily torn into pieces between Waterfall and Crunch (you'll need Ice Punch for Mega Altaria, though).
Pros for Feraligatr:
- Higher damage output
- Wallbreaks with Swords Dance
- Lower residual damage overall (no LO recoil and only loses 1/8 on SR, but rejoined by Leftovers and Mega Gyarados)
- Can 2HKO Ferrothorn with Low Kick at +0 (Mega Gyarados needs the Dragon Dance boost for this)
- Priority
- Does not take up the Mega slot
Pros for (Mega) Gyarados:
- More opportunities between Water/Flying, Intimidate, Lum Berry and/or Sub
- Secondary STAB in Crunch (Mega) or Bounce (base)
- Mold Breaker as Mega vs. Sturdy & Magic Bounce
- Stallbreaks with Taunt