How to Evolve Nincada

Nincada possesses a unique branching evolution that results in two distinct Pokémon simultaneously. To initiate this process, you must raise Nincada to Level 20. This triggers the standard evolution into Ninjask, a Bug/Flying type.

To acquire Shedinja alongside Ninjask, two strict conditions must be met at the exact moment of evolution. First, you must have a maximum of five Pokémon in your active party, leaving one slot completely empty. Second, you must have at least one standard Poké Ball in your bag.

The type of Poké Ball matters. Great Balls, Ultra Balls, Premier Balls, and other variants will fail to capture Shedinja. This specific Poké Ball requirement was introduced in Generation 4; in the original Ruby and Sapphire games, only the empty party slot was necessary.

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Ninjask operates as a dedicated Fast Pivot or Baton Pass enabler. With a staggering Base 160 Speed and the Speed Boost ability, it naturally outpaces nearly the entire unboosted metagame.

Its primary competitive strategy involves using Protect to guarantee a Speed Boost trigger, followed by Swords Dance, and finally Baton Pass to transfer these stat increases to a slower, bulkier sweeper. In lower tiers, it can run Choice Band to act as a hit-and-run physical attacker using U-turn.

• Pros: Unmatched natural Speed tier. Guaranteed priority pivoting with Speed Boost. Excellent utility movepool including Defog and U-turn.
• Cons: 4x weakness to Stealth Rock strips 50% of its HP upon switching in. Base 90 Attack fails to secure OHKOs against neutral targets. Base 61/45/50 bulk guarantees it dies to almost any unresisted hit.

Verdict: 4/10. Ninjask is highly linear and entirely reliant on Heavy-Duty Boots. It excels on dedicated Baton Pass teams where permitted, but falls flat in standard offensive builds due to its fragility and vulnerability to priority moves like Extreme Speed or Ice Shard.

Shedinja functions as a Gimmick Wall and highly specialized pivot. Its signature ability, Wonder Guard, renders it completely immune to all direct damaging moves that are not super effective. As a Bug/Ghost type, it is only weak to Fire, Flying, Rock, Ghost, and Dark.

Because its maximum HP is permanently locked at 1, Shedinja survives purely on its immunities. It completely walls specific legendary threats like Kyogre if they lack an optimal coverage move. Players use it to force switches and spread status conditions like Will-O-Wisp or Toxic.

• Pros: Immune to 13 out of 18 attack types. Can completely shut down choice-locked attackers. Excellent pivot for absorbing Water, Normal, Fighting, and Ground attacks.
• Cons: Dies instantly to any entry hazard (Stealth Rock, Spikes). Instantly KO'd by Sandstorm, Hail, Poison, Burn, Leech Seed, or Rocky Helmet recoil. Requires absolute perfection in team hazard control.

Verdict: 5/10. Shedinja is a high-risk, high-reward hard counter. It is terrible for casual playthroughs but holds a specific niche in high-level competitive stall teams. It absolutely requires Heavy-Duty Boots to negate its fatal hazard weakness.

When Shedinja materializes in your party, it acts as a perfect clone of the base Nincada. It inherits Nincada's exact Individual Values (IVs), Effort Values (EVs), and Nature. If your Nincada is shiny, both Ninjask and Shedinja will be shiny.

This inheritance creates a unique EV training scenario. Any EVs invested into Nincada's HP stat are completely wasted on Shedinja, as its HP is hardcoded to remain at 1 regardless of EVs, IVs, or level. Players building a Nincada for Shedinja should exclusively invest 252 EVs into Attack and 252 into Speed.

Shedinja also copies the exact moveset Nincada knows at the moment of evolution. If Nincada learns a move at Level 20, Ninjask will attempt to learn it first. If you allow Ninjask to learn the move, Shedinja will inherit it as well. This was historically used to pass Swords Dance to Shedinja in Generation 3 by delaying evolution to Level 25, though modern Move Relearners make this workaround obsolete.

Deploying either Ninjask or Shedinja dictates your entire team structure. Both Pokémon share a fatal weakness to Stealth Rock. While Heavy-Duty Boots provide a modern solution, losing the item to Knock Off immediately compromises both units.

Your team must include aggressive hazard control. Magic Bounce users like Hatterene or Xatu are optimal, as they reflect hazards before they land. Alternatively, reliable Defoggers such as Corviknight or Rapid Spin users like Excadrill are mandatory partners.

For Shedinja specifically, you must also control the weather. Pairing Shedinja with Tyranitar or Hippowdon is a fatal error, as their Sand Stream abilities will KO Shedinja at the end of the turn. Shedinja pairs best with bulky Steel or Dark types that resist its specific weaknesses, allowing for safe pivoting when the opponent brings in a Fire or Ghost type attacker.