Pokémon Obtaining Guide/Key Based

The Key Based Pokémon Obtaining Guide lists of every location where keys are used to obtain Pokémon. Pokémon obtained through keys are either in Mystery Eggs or are spawned by using Honey and recruited with a guaranteed recruit rate.

Icy Burrows
In Winden there are two Icy Burrows that allow you to get either Alolan Sandshrew or Alolan Vulpix. These Icy Burrows can only be accessed when unlocked with their respective key. Both Icy Burrows contain one Honey to spawn their respective Pokémon at level 5 with a recruit rate of 100%.

Sandshrew Icy Burrow
The first Icy Burrow is unlocked with an Icicle Key, obtained from Iceberg Adrift end boxes or boss drop from Suicune. This burrow is south-east of Winden, beyond Glitter Cavern.

Vulpix Icy Burrow
The second Icy Burrow is unlocked with a Snowflake Key, obtained from Iceberg Adrift end boxes or boss drop from Suicune. This burrow is south-west of Winden in the Nivenath Outpost.

The Hidden Garden
The Hidden Garden is unlocked with a Floral Key, obtained from event dungeons or shops. It is west of Pitch-Black Abyss in Exbel.

The Pokémon obtained here is Comfey at level 5, through recruitment. One Honey is supplied in a room to spawn the recruitable Pokémon.

Secret Cave
The Secret Cave is unlocked with a Heart Key, obtained from event dungeons or shops. It is southwest of Mt. Barricade in Exbel.

The Pokémon obtained here is Jangmo-o at level 1, through recruitment. One Honey is supplied in a room to spawn the recruitable Pokémon.

Sandy Nest
The Sandy Nest is located at the entrance of Dynamo Sands. The Sandy Nest is unlocked with an Amber Key, obtained from Gabeedle's Shop, in exchange for 10,000 Rupi. The currency Rupi can be found in Dynamo Sands' Labyrinth.

The Pokémon obtained here is Gible. The Pokémon is unhatched and obtained through a Mystery Egg.

Veiled Nest
The Veiled Nest is located at the entrance of Dragon's Descent. The Veiled Nest is unlocked with a Coveted Key, obtained from Taric's Shop, in exchange for 8,000 Royal Gems. The currency Royal Gems can be found in Dragon's Descent and Dragon's Descent Depths.

The Pokémon obtained here is Dratini. The Pokémon is unhatched and obtained through a Mystery Egg.

Dark Cavity
There are two Dark Cavity found at the entrance of either Dragon's Descent or Dynamo Sands. They can only be accessed when unlocked with their respective key.

Dratini Dark Cavity
The Veiled Nest is located at the entrance of Dragon's Descent. The Veiled Nest is unlocked with a Glittering Key, obtained from Taric's Shop, in exchange for 70,000 Royal Gems. The currency Royal Gems can be found in Dragon's Descent and Dragon's Descent Depths.

The Pokémon obtained here is shiny Dratini.

Gible Dark Cavity
The Sandy Nest is located at the entrance of Dynamo Sands. The Sandy Nest is unlocked with an Radiating Key, obtained from Gabeedle's Shop, in exchange for 80,000 Rupi. The currency Rupi can be found in Dynamo Sands' Labyrinth.

The Pokémon obtained here is shiny Gible.