Wonder Trade Guide - Shiny Odds, Hidden Abilities & Mechanics
Complete Wonder Trade guide for Polished Crystal. Trade any Pokémon for a random one at the same level in Goldenrod. 4x shiny rate (1/1024), 33% Hidden Ability chance, held items possible, 50/50 gender ratio. Offline Wonder Trade system explained with full mechanics and optimal strategies.
Introduction
Polished Crystal has its own version of Wonder Trade that works offline - basically emulating the Gen VI–VII online feature without needing any connectivity. You trade a Pokémon and get a random one back at the same level, with boosted chances of it being Shiny, having a Hidden Ability, or holding an item.
It's a fun way to mix up your team or hunt for specific things you might not want to breed for or completing your dex.
How It Works
Source: wonder_trade.asm — engine/events/wonder_trade.asm, valid_level.asm — data/pokemon/valid_levels.asm, variant_forms.asm — data/pokemon/variant_forms.asm
- Head to the machine behind the clerk in the center of Goldenrod PCC
- Trade in any Pokémon
- The game checks its level and instantly returns a random Pokémon at that same level
That's it!
What Makes It Special
Here's where Wonder Trade gets interesting:
- Shininess: 4× the normal shiny rate (1/1024 instead of 1/4096)
- Abilities: Equal 1/3 chance of Ability #1, Ability #2, or Hidden Ability
- Held items: Chance scales with level, plus a small chance for rare items (works similar to Pickup)
- Gender: 50/50 male or female regardless of the species' normal gender ratio
- OT: Randomly selected from internal name lists
The Hidden Ability thing is huge - normally those are a pain to get, but Wonder Trade gives you a 33% chance!
Egg Trading
Unlike the main series games, you can trade an Egg and get a random Egg back. Neat if you want to hatch something unexpected.
What You Can't Get
Wonder Trade won't give you:
- Legendaries or other static encounter Pokémon
- Unown
- Eggs (unless you traded an Egg in)
Available Pokémon
Source: valid_levels.asm — data/pokemon/valid_levels.asm
Here's everything you can receive through Wonder Trade. The level of the Pokémon you trade determines what's available - you'll only get species that can exist at that level.
Showing 315 of 315 available Pokémon
Held Item Chances
Source: wonder_trade/held_items.asm — data/events/wonder_trade/held_items.asm, battle/abilities.asm — engine/battle/abilities.asm
The higher the level, the better your item odds. At low levels you'll usually get nothing, but higher levels guarantee something and open up rarer items.
| Item / Level | 1–10 | 11–20 | 21–30 | 31–40 | 41–50 | 51–60 | 61–70 | 71–80 | 81–90 | 91–100 |
|---|---|---|---|---|---|---|---|---|---|---|
(Nothing) | 70% | 60% | 50% | 40% | 30% | |||||
Oran Berry | 10% | 10% | 10% | 10% | 10% | 30% | ||||
Sitrus Berry | 10% | 10% | 10% | 10% | 10% | 10% | 30% | |||
Lum Berry | 4% | 10% | 10% | 10% | 10% | 10% | 10% | 30% | ||
Leppa Berry | 4% | 4% | 10% | 10% | 10% | 10% | 10% | 10% | 30% | |
Figy Berry | 4% | 4% | 10% | 10% | 10% | 10% | 10% | 10% | 30% | |
Starf Berry | 4% | 4% | 10% | 10% | 10% | 10% | 10% | 10% | ||
Ganlon Berry | 4% | 4% | 10% | 10% | 10% | 10% | 10% | |||
Petaya Berry | 4% | 4% | 10% | 10% | 10% | 10% | ||||
Leichi Berry | 4% | 4% | 10% | 10% | 10% | |||||
Salac Berry | 4% | 4% | 10% | 10% | ||||||
Apicot Berry | 4% | 4% | 10% | |||||||
Lansat Berry | 4% | 4% | ||||||||
Custap Berry | 4% | |||||||||
Ability Capsule | 1% | 1% | 1% | 1% | ||||||
Lucky Egg | 1% | 1% | 1% | 1% | ||||||
Eviolite | 1% | 1% | 1% | 1% | ||||||
Leftovers | 1% | 1% | 1% | 1% | ||||||
Rare Candy | 1% | 1% | 1% | 1% |
- Shiny Rates GuideLearn about the 33% shiny rate in Wonder Trade and how it compares to other methods
- Breeding GuideUse Wonder Trade Hidden Ability Pokémon for breeding competitive Pokémon
- Hidden Grottoes GuideFind out how to get Hidden Abilities through Hidden Grottoes as an alternative to Wonder Trade
- Nature GuideUnderstand that Wonder Trade Pokémon have random natures and how to work with that
- IVs & EVs GuideWonder Trade Pokémon have random IVs - learn how to optimize them for your team
- Team Building BasicsIncorporate Wonder Trade finds into your team building strategy
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