Arctic Fox

The Arctic Fox is a Mythical pet added during the Christmas Harvest Event, and unlike a random egg drop, it is earned, not gambled. You unlock it by reaching level 40 on the Season Pass, which means there is zero RNG involved: the entire "difficulty" is grind endurance across the event window. That is actually a friendlier path than most Mythicals, because a determined player who logs in daily and completes pass tasks is essentially guaranteed the Fox rather than praying for a low-percentage hatch.

For a farming build, a guaranteed Mythical is a strong anchor. Because everyone who pushed the pass to 40 owns one, the Arctic Fox tends to be more of a workhorse than a flex piece in trade terms, but that ubiquity cuts both ways: it is widely held, so it is easy to slot onto a team without trading away rarer pets. The smart play is to treat it as a reliable everyday Mythical and pair it with rarer, RNG-locked companions for niche bonuses. Its level-40 unlock makes it accessible, and accessibility is exactly why it remains a dependable backbone of seasonal lineups rather than a price-spiking collectible.