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There is a Legacy version here.

PFS LimitedImp

Fiend Unholy 
Source Player Core 2 pg. 171
Required Number of Abilities 7
Granted Abilities darkvision, flier, manual dexterity, resistance (poison), skilled (deception), speech, touch telepathy

Imp familiars pretend to be subservient in order to trick their master into losing their soul or finding an early grave.

Fiendish Temptation [one-action]

Source Player Core 2 pg. 171
Frequency once per day; Effect (concentrate, divine, fortune, unholy) The imp offers a non-fiend within 15 feet a bargain, granting a boon of good luck if the creature accepts. The boon lasts for 1 hour once accepted. Once during the hour, the creature can roll an attack roll or saving throw twice and use the higher result. If the creature dies while the boon is in place, the imp decides where the creature’s soul travels. This typically makes the soul bound for eternity in the imp’s home plane, and the creature is unable to be raised or resurrected except by the wish ritual or similar magic.

Imp Invisibility

Source Player Core 2 pg. 171
Frequency once per hour; Effect Once per hour, your imp familiar can cast invisibility on itself as a divine innate spell.