Berend Boer is a Dutch Vorthos and historian of the Magic: The Gathering storyline. He is known on this wiki as User:The Squirle master, and on Twitter as the Url of Squirle. On Tumblr he is simply known as Squirle.
Boer is famous in the Magic community for his Blog Multiverse in Review in which he dissects the convoluted Magic storyline, by gathering and comparing sources on cards, from calendars, in Magic video games, in comics, on magic websites, in books and in interviews with storyline authors. He started the blog in 2015, and hasn't finished yet.