"Greatly increased fire rate that decelerates over time."
— In-game description
Invert Polarity is an Epicgun perk in Call of Duty: Infinite Warfare. It is exclusive to the Oni's Epic Tengu variant, and the perk's effects are somewhat intrinsic to the Oni's base functionality. The weapon's fire rate is greatly increased for the first few shots, then slows down after that. As the name suggests, this effectively reverses the fire rate properties of the base Oni.