NFE Dragon Dance Sweeper (Croconaw) @ Eviolite / Life Orb  
Ability: Sheer Force  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Waterfall  
- Ice Punch  
- Aqua Jet / Crunch
NFE Swords Dance Wallbreaker (Croconaw) @ Life Orb / Eviolite  
Ability: Sheer Force  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Waterfall  
- Ice Punch  
- Aqua Jet / Crunch 
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Optional Move(s): 
- Superpower
Optional Item(s): 
- N/A
Optional Ability: 
- N/A
Optional EV/IV(s):  
- 252 Atk / 4 Def / 252 Spe (Adamant)
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Overview: Croconaw is a reasonably good setup sweeper and wallbreaker in the current metagame, capable of putting in work against unprepared teams. However, its low speed and bulk hold it back against more offensive and faster teams. It also faces competition from Marill as a physically offensive Water-type.
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Dragon Dance Sweeper: With Sheer Force and Life Orb, Croconaw gets a large boost in power to all of its attacks with a secondary effect. Eviolite gives up some of that power in exchange for improved bulk. Dragon Dance boosts both Croconaw's Speed and Attack, letting it outspeed the unboosted metagame at +1 including notable threats such as Electabuzz, Frogadier, Haunter, and Kadabra, and it can typically set up against passive defensive Pokemon such as Clefairy and Togetic. Boosted STAB Waterfall OHKOs offensive Fire- and Ground-types such as Monferno, Krokorok, and Magmar and also hits most neutral targets hard. Ice Punch provides a good coverage move against Grass-types such as Roselia, Servine, and Gloom. Aqua Jet lets Croconaw revenge kill faster Pokemon such as Combusken, Krokorok, and weakened fast frail threats such as Electabuzz, Haunter, and Kadabra without setting up. Crunch gives Croconaw a good boosted super effective coverage move against bulky Ghost- and Psychic-types such as Misdreavus, Dusclops, and Metang. 
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Swords Dance Wallbreaker: The Swords Dance set gives up some of its cleaning abilities in exchange for immediate power and wallbreaking capabilities. Swords Dance boosts Croconaw's Attack. Eviolite Swords Dance Croconaw can 2HKO Clefairy, Dusclops, Metang and Togetic and OHKO Sliggoo at +2. Life Orb Swords Dance OHKOs specially defensive Servine, 2HKOs Quilladin and Aqua Jet OHKOs Haunter at +2.
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Checks and Counters: Physically defensive Mareanie and Wartortle can both tank Crunch from Croconaw and Haze away boosts. If not carrying Superpower, Ferroseed can also comfortably eat any hit from Croconaw and threaten it back with paralysis and Leech Seed. Focus Sash Kadabra can also trade its Focus Sash in exchange for OHKOing Croconaw with Counter or Psychic after some chip. Physically defensive Grass-types such as Gloom and Quilladin can tank a +2 Life Orb Sheer Force boosted Ice Punch and revenge kill it with super effective STAB attacks.
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