There are two big reasons why Farfinder will be the first pick in Limited pools for many players.
First, it has Vigilance, which makes it a great card to Mutate. That ability is super useful in a format that strongly relies on effective attacks and blocks.
Second, it's a reliable mana fixer, which allows you to search your entire library for the exact type of basic land that you're looking for. This means that splashing will be done effectively this season.