I was one tap away from a squad wipe when I flick-switched to Orion and watched armor strip away like a curtain falling. The map went silent, then the river of stars from my ultimate swallowed half a room. That moment — tag, trade, finish — is why this frame pair rewards practice with payoff.
I’ve spent hours testing Sirius and Orion across Steel Path sorties and low-level relic runs, and I’m going to show you a build that keeps energy flowing and keeps both brothers useful every cast. You’ll get clear mod choices, a handful of play cues, and why certain Arcanes and Aura choices matter in squads or solo runs.
A quick observation: most players treat dual frames like two solo Warframes. Here’s a better way.
Sirius and Orion play as one system but swap between two characters. Their Passive grants 45% Ability Efficiency for the next two casts after swapping, which is the mechanical glue that makes tag-play profitable. Use swapping as your rhythm — it’s how you keep heals, shields, and gravity where you need them.
| Ability | Sirius | Orion |
|---|---|---|
| 1 | Hurl Sirius’ Jade Light-infused Scythe, dealing Heat damage while collecting any pickups in its path. | Repel enemies with Orion’s sinister Scythe, dealing Slash damage while reducing shields and armor. |
| 2 | Sirius conjures Jade Light motes that slowly regenerate over time. Attacking enemies launches the motes, dealing Heat damage. | Envelop Orion in an Astral Shell. Upon taking damage, the shell becomes a decoy that draws fire until it’s destroyed. |
| 3 | Sirius creates a well of light that heals and revives allies, while reducing incoming damage. The well slowly grows in size and power. | Orion forms a drifting black hole, trapping enemies within its gravity. Enemies killed within the black hole will empower it. Hitting the black hole with Gravitic Slash will redirect it away from Orion, and hitting it with Coronal Ejection will pull it towards Sirius. |
| 4 | Sirius & Orion take to the skies in a cosmic duel. Each clash deals colossal collateral damage to enemies.Attacks will expend Constellation Stars — the Stars you earn from casting Abilities (as described above). Match the star’s color to the Warframe’s color to deal increased damage and bonus Critical Chance.Press Left clicks for Sirius to attack | Sirius & Orion take to the skies in a cosmic duel. Each clash deals colossal collateral damage to enemies.Attacks will expend Constellation Stars — the Stars you earn from casting Abilities (as described above). Match the star’s color to the Warframe’s color to deal increased damage and bonus Critical Chance.Press Right clicks for Orion to attack |
Passive: Swapping between Sirius & Orion grants 45% Ability Efficiency for the next 2 casts.
Small observation: range and energy are the unsung MVPs for duo frames.
If you want the tag-play to feel fluid, you need two things: energy uptime and reach. I design this build so you can spam tags, keep Sirius’ well active for revives, and let Orion pull armor off enemies before you drop the vortex.
How do you build Sirius and Orion in Warframe?
Start by matching mods between frames where possible — it reduces decision fatigue and lets you swap without swapping priorities. For Sirius I run a mix that favors range and energy, with enough strength to make the third ability and the ultimate matter.
- Corrosive Projection (Aura): Reduces enemy armor by 18% — high value for sustained kills.
- Cunning Drift (Exilus): Adds slide and range; swapping becomes smoother with this equipped.
- Stretch: Cheap range and immediate returns for abilities that scale with distance.
- Overextended: Sacrifices some strength for a big spike in range; this build leans range-first.
- Primed Flow: Larger Energy pool to support frequent swaps and constant ability casting.
- Primed Continuity: Keeps Sirius’ healing well up longer and helps Orion keep his vortex active.
- Augur Secrets: Boosts strength and converts 40% of energy used into shields — provides overheal.
- Transient Fortitude: Higher ability impact while accepting reduced duration.
- Blind Rage: Extra strength at the cost of efficiency; the Passive swapping bonus helps offset that cost.
Field observation: small arcane choices change the feel of a run more than micro-optimizing every mod.
Arcanes are what let a run feel tight or sloppy. I recommend two picks depending on your style.
- Arcane Energize: 60% chance on energy pickup to restore 150 energy to you and allies (15s cooldown).
- Molt Augmented: +0.24 Ability Strength per kill, stacks to 250 — it snowballs in long survival or defense runs.
On Orion I often swap Augur Secrets for Augur Reach to lean slightly harder into range. For Aura, if you’re in a squad choose Power Donation or Growing Power depending on whether you want raw team damage or scaling strength.
On-mission observation: combos exist so players don’t have to improvise under pressure.
How do you play Sirius and Orion effectively?
I always start as Sirius. That positioning gives you access to the healing well and the Jade Light motes for poke. Here’s the sequence I use until it becomes reflex:
- Cast Sirius’ 3 to lay the healing well.
- Hold the 3 key to swap into Orion and immediately cast Orion’s 3 to set the vortex inside the well.
- Use Orion’s 1 for armor stripping; hold to switch back to Sirius and drop motes or a scythe slash.
- Tag again into Orion and finish with the ultimate when Constellation Stars have stacked; match star color for extra crit chance.
Every swap refunds efficiency for two casts — use that window to bridge long cooldowns. Tagging between offense and defense is the kit’s rhythm; swapping feels like a stagehand shifting lights, and the duo clings to enemies like a magnet when you time the vortex and slash properly.
Bench observation: community tools speed proofing and tuning.
Before you run Steel Path, use Warframe Builders, the in-game Arsenal, or the Warframe subreddit and Discords to test minor changes. Creators like Brozime and community hubs on r/Warframe and Digital Extremes’ own forums have practical clips that show the star-matching mechanic and combos in action.
What mods should I run on Sirius and Orion?
The shared baseline above will serve you across mission types. If you prefer tankier play, swap Augur Secrets for Vitality or Steel Fiber and consider a Power Donation aura for team play. If you prefer skirmish-style, keep the range mods and run Primed Flow to stop energy starvation.
The point of this build is simple: keep energy flowing so you can tag on your terms, use range to stitch zones together, and let Orion peel armor while Sirius keeps the team alive. You’ll find the playstyle rewarding whether you’re farming relics, running sorties, or clearing higher-level nodes — but what will you change first when you actually feel the tag rhythm hit?