Aura Mods currently are one of the prime examples where modding limits player choice. You usually fit into 3 categories (with some gray areas in between) when choosing an Aura: - Lower/Mid Tier player running whatever polarity matches and Steel Charge for Extra mod points on Madurai polarity Warframes. - Higher Tier player running Growing Power on Madurai, Rejuvenation on Vazarin, and Corrosive Projection/Energy Siphon on Naramon polarities. - Top Tier player running Corrosive Pro