Pokémon Go's Celebi is the game's second Mythical Pokémon, and was first made available in a different way to any other creature we've seen so far.
However, there's another key difference - the quest has debuted first for those attending this year's Go Fest in Chicago.
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How Celebi event 'A Ripple in Time' works in Pokémon Go
Where standard Field Research offers objectives that can be collected by players at any time, Special Research is a story-driven questline with specific steps.
The quest is broken down into eight stages, with multiple challenges to complete per stage. By completing every step of the Special Research quest, the Mythical creature will be given to players as a reward.
Though these are similar to Field Research quests, the specific steps are fixed for every player - so if you don't mind spoilers, you can plan ahead and learn what you need to do to complete them all catch Celebi - which is useful as you'll need to undertake Raid and Gym battles along the way.
To get started, you need to have completed the third group of tasks for Mew's'A Mythical Discovery'. Like Mew, there is no time limit to completing the quest line - so take your time!
What else do we know? There is a focus on Gen 2 Johto Pokémon (in the same way Mew was focused on Gen 1), with the event launching with increased Johto spawns to help complete the quests, as well as the release of Field Research relating to that generation.
If you already caught Celebi by taking part in Chicago's Go Fest, then completing the many tasks will earn you Candy to help power Celebi up.
Additionally, what makes this interesting is Celebi is not the mysterious 'Ultra Bonus Unlock' that is rewarded if player successfully complete challenges across all three Summer Tour 2018 events. So what else could it be?
How to complete Celebi's 'A Ripple in Time' event steps
Here are Celebi's quest steps and their rewards in A Ripple in Time. Be wary of spoilers before continuing, if you are worried about learning what each objective entails before unlocking them.
'A Ripple in Time' Step 1 of 8
- Power up a Pokémon 5 times
- Battle in a Gym 2 times
- Battle in a raid
Rewards: 10 Pokéballs, Fast TM, Special Incubator
'A Ripple in Time' Step 2 of 8
- Make 3 new Friends
- Catch a Pokémon 3 days in a row
- Evolve an evolved grass-type Pokémon
Rewards: Sun Stone evolution item, 1,500 Stardust, Premium Raid Pass
'A Ripple in Time' Step 3 of 8
'A Ripple in Time' Step 4 of 8
- Walk 10km with Eevee as your buddy to earn Candy
- Evolve Eevee into Espeon during the day
- Send 20 Gifts to Friends
'A Ripple in Time' Step 5 of 8
'A Ripple in Time' Step 6 of 8
- Visit PokéStops 7 days in a row
- Use 25 Pinap Berries while catching Pokémon
- Use special evolution items to evolve Pokémon 2 times
Rewards: 3,500 Stardust, Dragon Scale evolution item, 5 Silver Pinap Berries
'A Ripple in Time' Step 7 of 8
- Catch 40 Grass- or Psychic-type Pokémon
- Make an Excellent Curveball Throw
- Earn a Gold Johto Medal
Rewards: 1x Charge TM, 10x Silver Pinap Berries, Celebi encounter.
'A Ripple in Time' Step 8 of 8
- Catch Celebi!
Rewards: 5,500 Stardust, 1x Super Incubator, 20x Celebi Candy.
How Celebi first debuted in Pokémon Go
Before August, only those attending this year's Pokémon Go Fest in Chicago were available to catch Celebi.
Ahead of the July event, datamining (via The Silph Road subreddit) had revealed a Special Research quest for attendees, which confirmed how the following went down:
- A total of five steps to complete
- Challenges to hatch an Egg, earn Buddy Candy and visit PokéStops
- Catching Unown, Plusle and Minun
- Story text hinting at Celebi's time travelling abilities
Once attendees registered for the event (players have to spin a PokéStop and scan a barcade to register their account as attending) they could get started.
Another hint Celebi was going to be at Go Fest is through a sponsored tweet from Mystic7, showing a silhouette of the Pokemon in an event invite:
The datamines turned out to be true, with Celebi able to be caught after a day's play:
Pokémon Go Battles have arrived! Now's a good time to refresh yourself with our Best Pokémon lists and pick up some Sinnoh Stones. Elsewhere, there's February Field Research and additional Shinies, as well as the now-live Valentine's Day event and surprise Meltan event too. Meanwhile, new Pokémon Go Gen 4 Pokémon continue to be slowly released, along with the return of Legendary Palkia and its counters, and details of the next Community Day Pokémon Swinub.
Celebi stats and what else you need to know about Celebi in Pokémon Go
Celebi is Pokémon Go's second Mythical Pokémon, and the last Pokédex entry in Gen 2. While Legendary Pokémon are powerful beasts that are caught in game through specific steps, Mythical Pokémon can only be added to the game by acquiring it from real-world giveaways, and later in the series, online events.
Celebi is both Psychic and Grass Type, leaving it open to attack from Fire, Bug, Dark and Ghost attacks. Between that and fairly underwhelming stats, Celebi continues the trend that Mythical creatures aren't great competitive Pokémon in Pokémon Go.
However, its rarity alone makes it well worth the time and effort in completing the Special Research questline. After all, there is no way to trade it.
There are more to come, too. Like Legendary Pokémon, each generation adds one or two of these creatures - such as Gen 3's Jirachi and Deoxys - and it's assumed these creatures will be added to the game as part of their own Special Research quests at some point in the future.