Pack Mule

The Pack Mule is a limited Mythical pet from the Trader Event, and its very name promises a hauling-and-logistics fantasy that fits the merchant theme of where it came from. The catch is that its ability still shows as "???" in the data, meaning the passive was either undisclosed at recording time or deliberately mysterious. That uncertainty matters: you should evaluate this pet on its rarity and event provenance, not on a confirmed stat line.

Obtainment is the decisive factor here. Trader Event pets are time-gated, so once that event rotated out the Pack Mule could only move through trades, and limited Mythicals from special events tend to hold strong perceived value precisely because new players cannot farm them. That makes the Pack Mule attractive as trade currency regardless of what its hidden passive ultimately does.

For a serious farming team, the honest verdict is conditional. If you already own it, hold it and verify the live ability in-game before benching a proven pet for it. If you are shopping, do not overpay on the assumption that a mysterious passive is automatically strong. The Pack Mule is best understood today as a collector and trade-value asset with upside that depends entirely on confirming its real effect.