Warframe's Prime Resurgence Features Protea Prime and Ivara Prime
The October rotation pairs battlefield preparation with stealth, with distinct earned-Aya and paid-Regal-Aya routes.

Protea and Ivara Prime
Protea Prime and Ivara Prime entered Warframe's Prime Resurgence spotlight in Digital Extremes' October 1 announcement. The featured pairing offers two different approaches to missions, but the first decision for a returning player is more basic: whether to pursue parts through play or buy instant access.
Preparation or a Quieter Approach
Digital Extremes describes Protea Prime around battlefield preparation, deployed technology, and keeping a squad supplied. She is presented as a flexible option for controlling a fight rather than a character defined by one narrow task.
Ivara Prime's pitch is more deliberate. Her Quiver, Artemis Bow, and ability to move unseen support stealth and carefully chosen attacks. The contrast makes the rotation useful to players with quite different preferences, not just collectors looking for the next empty slot.
Neither description is a ranking. If you are deciding which to pursue first, think about the missions you actually enjoy and whether you prefer setting up a position or approaching an encounter quietly. A familiar playstyle is a better starting point than assuming the current featured pair must replace your existing loadout.

Prime Resurgence Routes
Aya Buys a Route to Parts
The official Prime Resurgence page separates earned Aya from purchased Regal Aya. Ordinary Aya can be exchanged with Varzia for Void Relics. You then open Relics in Void Fissure missions and gather the blueprints, components, and resources needed for Foundry construction.
Buying a Relic is therefore not the same as receiving a completed Prime Warframe. Keep that distinction in mind when deciding how much play time to set aside.
Regal Aya is the paid route to selected ready-built Prime items and bundles. The current page lists each featured Warframe individually for three Regal Aya, with larger bundles offered separately. Check the actual contents before comparing the individual and bundle options.
Choose What Your Collection Needs
Varzia's shop is accessible through Maroo's Bazaar, the Orbiter's Relic Segment, or the in-game Market. Start by checking which parts and items you already own, then choose a specific target.
For someone returning after several rotations, that small inventory check can keep the decision focused. You may want one missing component rather than an entire collection. The featured offering is an opportunity to finish a project, not an instruction to buy everything on the page.