A new Mega Evolution has arrived in Pokemon Go. Mega Ampharos has made its debut in Mega Raids this week, and developer Niantic is celebrating with a special Incense Day event featuring its first form, Mareep.

The Incense Day event takes place this Sunday, January 24, and runs from 11 AM to 5 PM local time. Throughout the event, Mareep will appear much more frequently when you use an Incense, and you'll have a chance to encounter and catch Shiny Mareep. On top of that, if you evolve Flaaffy--Mareep's evolved form--into Ampharos during the event, it'll learn the previously Community Day-exclusive move Dragon Pulse.