Imp

The Imp is a limited legendary that hatches from the Enchanted Egg at a 15% chance, and it arrived during the Fairy Event, so anyone who skipped that window is now stuck buying it off other players rather than hatching it fresh. That 15% slot is actually generous by legendary standards, meaning the real scarcity here is the event-locked egg itself, not the roll once you have one.

For a farming build, the Imp leans into the mischief theme that Fairy Event pets share: short-cooldown utility procs rather than a single flat multiplier. That makes it a filler slot pet for most rosters. It pairs best alongside a heavy mutation-focused pet, where its smaller bursts top up value between your bigger triggers rather than carrying the team itself.

Whether it earns a serious slot is a budget question. If you already own a top-tier sell-boost or mutation pet, the Imp is a fine fourth-slot complement. If you are still building toward a money engine, your active slots are better spent on guaranteed-value legendaries than on a limited collectible whose main appeal is event rarity and looks.