Pokémon Go Día de Muertos 2022 event, Collection Challenge guide
To celebrate Día de Muertos, Pokémon Go is hosting a short two-day event that introduces Dusclops with a special flower crown.
This article references relevant content from the polygon.com website. Original article link: [https://www.polygon.com/pokemon-go-guide/2022/11/1/23434731/dia-de-muertos-2022-event-collection-challenge-duskull-dusclops-dusknoir]

From Nov. 1-2, Pokémon Go is hosting a short event for Día de Muertos, featuring a Duskull wearing a cempasúchil flower crown and other bonuses, including a Collection Challenge.
During the two-day event, catch candy is doubled, plus both Lures and Incense will last for 90 minutes.
The Duskull with the cempasúchil crown will also have a chance to appear Shiny.

Our Pokémon Go guide lists the bonuses, Collection Challenge requirements, spawns, and other perks below.
Pokémon Go Día de Muertos 2022 Collection Challenge
Catch the following to get a reward:
Rewards: 1 Incense, 1 Poffin, 1 Alolan Marowak encounter
Increased Pokémon spawns for Día de Muertos 2022
Incense will cause the following Pokémon to spawn more frequently: