Firefly

The Firefly is a Mythical pet added during the Seed Stages Event alongside the Season Pass, so it belongs to the pet side of Grow a Garden rather than the crop-mutation roll. It does not stamp a sell multiplier onto a single fruit; instead a Mythical pet contributes a passive garden effect that works in the background while you farm, which is a different value proposition from a one-shot harvest bonus.

The route to it is the telling detail. Tied to the Season Pass, the Firefly was a progression reward you unlocked by leveling the pass during the Seed Stages window, which makes it a marker of having actually committed to that season rather than something you could simply buy off a stall. Its Standard availability means it followed the event's regular obtainment track, not a vanishingly rare drop.

For value, the Firefly is worth chasing if you are already invested in the season and want a Mythical-tier passive working for you long after the event closes. Season Pass pets gain a quiet prestige once the pass retires and can no longer be earned, so holding one signals you were there. Just remember the payoff is a steady passive, not the explosive per-sale spike a high crop multiplier delivers.