With Generation 4 just around the corner its an idea to become familiar with the Pokémon who are soon to be gracing our accounts, and how they are likely to evolve.

In total 107 new Pokémon and evolutions are going to be added to our client, and within that there are a large number of Pokémon that have required items to induce evolution within the main games.

However, there are also Pokémon which are so far unreleased in Generation 3 which have historically required a similar mechanic.

This article is a breakdown of the Pokémon which currently require an specific item as part of their evolution, as well as those Pokémon which are likely to.


Evolution Items; Hold on Tight

With the second generation, four items were introduced to the game which required specific Pokémon to hold them during a trade to another player. Upon a successful transfer the Pokémon would evolve.

While trading Pokémon to evolve is nothing new, this was the first time we had to include an additional mechanic and in Pokémon Go this was no different.

When Generation 3 was brought in, this theme continued with Clamperl. At time of writing this has not yet been implemented.

In Generation 4 the mechanic shifted again. Items held by Pokémon that leveled up at certain times of day they would evolve. Gligar into Gliscor at night is an example of this.

Currently, Tier 1 (T1) evolution’s require 50 candy and Tier 2 (T2) need 100 candy, in addition to the respective item to induce evolution, but if this is to remain the norm we do not know.

Below is a list of items which are used in the main games for evolution, there is no guarantee they will be implemented into Pokémon Go but with the 4 items we currently have it does seem likely at least some of them will make it. Generation 2 items are included for completeness.

Generation 2

Dream Dragon Scale Sprite.pngDragon Scale
Evolution Generation Main Game Criteria
  •  Seadra into Kingdra
  • Gen 2 T2
  • Held during Trade
Dream King's Rock Sprite.pngKing’s Rock
Evolution Generation Main Game Criteria
  • Poliwhirl into Politoed
  • Slowpoke into Slowking
  • Gen 2 T2
  • Gen 2 T2
  • Held during Trade
  • Held during Trade
Dream Metal Coat Sprite.pngMetal Coat
Evolution Generation Main Game Criteria
  • Onix into Steelix
  • Scyther into Scizor
  • Gen 2 T2
  • Gen 2 T2
  • Held during Trade
  • Held during Trade
Dream Up-Grade Sprite.pngUp-Grade
Evolution Generation Main Game Criteria
  • Porygon to evolve into Porygon2
  • Gen 2 T1
  • Held during Trade

Generation 3

Dream Deep Sea Scale Sprite.pngDeep Sea Scale
Evolution Generation Main Game Criteria
  • Clamperl into Gorebyss
  • Gen 3 T1
  • Held during Trade
Dream Deep Sea Tooth Sprite.pngDeep Sea Tooth
Evolution Generation Main Game Criteria
  • Clamperl into Huntail
  • Gen 3 T1
  • Held during Trade

Generation 4

Dream Dubious Disc Sprite.pngDubious Disc
Evolution Generation Main Game Criteria
  • Porygon2 into Porygon-Z
  • Gen 4 T2
  • Held during Trade
Dream Electirizer Sprite.pngElectirizer
Evolution Generation Main Game Criteria
  • Electabuzz into Electivire
  • Gen 4 T2
  • Held during Trade
Dream Magmarizer Sprite.pngMagmarizer
Evolution Generation Main Game Criteria
  • Magmar into Magmortar
  • Gen 4 T2
  • Held during Trade
Dream Protector Sprite.pngProtector
Evolution Generation Main Game Criteria
  • Rhydon into Rhyperior
  • Gen 4 T2
  • Held during Trade
Dream Razor Claw Sprite.pngRazor Claw
Evolution Generation Main Game Criteria
  • Sneasel into Weavile
  • Gen 4 T1
  • Held and leveled up during the night.
Dream Razor Fang Sprite.pngRazor Fang
Evolution Generation Main Game Criteria
  • Gligar into Gliscor
  • Gen 4 T1
  • Held and leveled up during the night.
Dream Reaper Cloth Sprite.pngReaper Cloth
Evolution Generation Main Game Criteria
  • Dusclops into Dusknoir
  • Gen 4 T2
  • Held during Trade

Generation 6

Dream Sachet Sprite.pngSachet
Evolution Generation Main Game Criteria
  • Spritzee into Aromatisse
  • Gen 6 T1
  • Held during Trade
Dream Whipped Dream Sprite.pngWhipped Dream
Evolution Generation Main Game Criteria
  • Swirlix into Slurpuff
  • Gen 6 T1
  • Held during Trade

It seems possible to me that the Razor Claw and Fang could be converted into Buddy Distance and night evolution, which would cut down on the overall amount of potential evolution items coming to our clients. If not we are looking at an additional 11 items for our 7 Day Spin bonus over the coming generations.

Items unlikely to make the cut

The following list reflects evolution items which have either already been replaced with other Pokémon Go mechanics, or are unlikely due to the Pokémon involved.

Dream Prism Scale Sprite.pngPrism Scale
 Evolution  Generation  Main Game Criteria
  • Feebas into Milotic
  •  Gen 3 T1
  • Held during Trade
Dream Oval Stone Sprite.pngOval Stone
 Evolution  Generation  Main Game Criteria
  • Happiny into Chansey
  •  Gen 4 T0
  • Held and leveled up during the day.

Despite the Chansey family being a staple of the game, my personal view is that I don’t see Niantic implementing a special item for a pre-evolution. It seems more likely that a 25 candy requirement would be applied in line with other egg Pokémon.

Understanding the “Item Bloat”

The risk of adding items to Pokémon Go is that we only have a single method of obtaining them. To add more items would reduce the ratio we get form each spin, including the 7 day bonus. If you’re one of those unlucky players who gets many of the same item in a row, consider that to obtain a Reaper Cloth, you have to contend with all other evolution item drops each spin.

Currently we have 5 items in the evolution pool. This means that with each spin that produces an evolution item is, at time of writing, a 1:5 or 20% chance of getting the one your after.

On your first spin of a Day 7 chain, you know you will get an evolution item. You have 20% chance of getting the one you want. If the two Generation 3 items were introduced (Deep Sea Scale and Tooth) the chance drops to 1:7 or ~14%. Each time an evolution item is introduced the ratio increases, and the chances of getting one goes down.

A followup article will focus on elemental stones, but im sure you will appreciate that there are also contenders in that category as well which will bloat the item pool further.

This is a quick table of how the guaranteed drop ratio will pan out if the rate and mechanic remains unchanged.

*For the sake of the below table I have included the Dawn Stone as a requirement as it is part of a split evolution.

Generation Items Stones Cumulative Ratio
Gen 1
Gen 2 4 1 5 1:5 (20%)
Gen 3 2 0 7 1:7 (14.2%)
Gen 4 7 1* 15 1:15 (6.6%)
Gen 5 0 0 15 1:15 (6.6%)
Gen 6 2 0 17 1:17 (5.8%)
Gen 7 0 0 17 1:17 (5.8%)

Here is hoping that if more evolution items are introduced, then either the drop rates increase or a new mechanic is added for obtaining items. My own theory on a new mechanic can be found here, but as a concept by no means a sure thing.

Venasto1se.