For Titania players: instead of using a rank 4 Streamline and a rank 4 Fleeting Expertise, Boreal's Hatred with a full Streamline (and obviously duration mods) will let you reach the 1.25
Warframe Corrupted Mods Guide - How To Get Best Corrupted Mods
Warframe Mods Guide: Prime Mods, Riven Mods, & All Mod Types