Aura

Auras are special mods. They operate as normal mods except that they affect the entire Squad.

They can be fused to create a stronger effect card. Using Aura cards will add to your total mod capacity, unlike regular mods. Forma can be applied to the special Aura slot the same way you would polarize any other slot. When clicking on Polarize to open the menu the aura slot will be to the left of the warframe slots and outlined in gold.

Putting an Aura with the same polarity slot as your Aura slot will double the mod points given (point cost 5 rifle amp becomes 10 points added) and unlike Auras will decrease the amount of points you gain (you will still gain more points regardless). A maxiumum of 14 bonus mod points can be acquired from a like-polarity Aura.

There are 3 2  and 8  aura mods.

Acquisition
Aura Mod cards have currently been converted from user's Artifacts as of Update 9, including more than one if the user obtained more than one before the update. They will most likely drop like normal mods, respective of the polarity and faction, and can be obtained as alert mission rewards. Aura cards can be sold for 500 credits at their base values.