Seasonal Line
The Seasonal Line encompasses Seasonal Turtwig, Grotle, and Torterra, which were released as the first official regular event and are Exclusive Pokémon.
Obtaining
Seasonal Turtwig can be obtained through trading, or breeding.
Event
The Seasonal Line was the first event to run as a regular event, whereby users' interaction points were counted and the top 1,000 users had a chance to receive the event after a specified date according to their rank. (100% at #1 and 0.01% at #1,000)
Evolution Tree
Egg