HSR Relic Set Farming Route: Priority Order by Cavern
30-second summary: HSR has 58 Relic/Planar Ornament sets in total, but the practical number to remember is 16 Caverns of Corrosion (4pc Relic sets), plus the Simulated Universe and Divergent Universe worlds (2pc Planar Ornament sets) —
because EVERY one of these locations always drops TWO different sets at once (not one set per location), so a single farming run is really targeting two goals simultaneously.
The sensible priority order: farm the main DPS's 4pc set first (it usually swings damage more than secondary pieces), then the 2pc Planar Ornament matching that role, and always check the main stats are correct before pouring materials into upgrading. (official in-game figures — live-counted from GameVika's internal farm data.)
The overlooked fact: every location drops 2 sets at once
Checking the farm data across all 58 Relic/Planar Ornament sets, all 16 Caverns of Corrosion (4pc type) and every Simulated Universe/Divergent Universe world (2pc type) drop EXACTLY 2 paired sets from the same location — for example, Cavern of Corrosion: Path of Drifting drops both of its two different sets in the same run, not a choice between one or the other before entering.
That means when picking which cavern to farm, you should think in terms of which PAIR of sets is useful, rather than assuming each cavern only serves one set.
Priority 1: your main DPS's 4pc set first
For a freshly-built team, prioritize whichever Cavern pair contains the 4pc set matching your main DPS — a 4pc set's stacking effect (usually a % damage boost tied to Element or archetype) only kicks in with all 4 pieces from the same set, while a 2pc Planar Ornament has a proportionally smaller impact.
Once the main set is farmed, check the two most important substats (usually Speed and Crit/Break Effect depending on role) before pouring more materials into upgrading — a Relic with the wrong main stat or badly-rolled substats is better set aside than forced into use.
Priority 2: 2pc Planar Ornaments, and the harder-but-richer Divergent Universe
Once the 4pc set is solid, move to farming 2pc Planar Ornaments in Simulated Universe (7 worlds, each also dropping a pair of sets) to add role-specific secondary effects (like team-wide ATK boosts or Break damage bonuses).
Divergent Universe (6 themes, also each dropping a pair) is a harder variant of the same system — usually demanding better skill/team composition to fully clear, but rewarding higher rates or amounts than standard Simulated Universe, so it's worth saving for once the team is strong enough not to waste runs.
How much Trailblaze Power each run costs — and a quick lookup for set locations
Before planning a farming route, know the real cost: each Cavern of Corrosion run (4-piece sets) costs 40 Trailblaze Power — as expensive as a high-tier ascension stage, so it's only worth grinding once your account has unlocked 5-star drops (farming too early mostly yields low-rarity pieces, wasting Power). Simulated Universe (2-piece Planar Ornaments) is scored WEEKLY instead of per-run: clearing to the weekly point cap gets the full reward, no need to track individual "runs" the way Caverns work.
The full lookup table for all 58 Relic/Ornament sets and their farming locations already exists as a searchable reference on GameVika's Relics page (type a set's name, get its location instantly), so this article won't repeat that whole table — open that page when you need a specific set instead of scanning through a long article.
FAQ
How many total Relic/Planar Ornament sets are in the game?
Live-counted from GameVika's internal farm data: 58 sets, spread evenly as pairs across 16 Caverns of Corrosion (4pc) + 7 Simulated Universe worlds (2pc) + 6 Divergent Universe themes (2pc). See the full names and effects of each set in GameVika's Relic Sets Overview article.
What difficulty/world level should I farm at for the highest-rarity Relics?
The higher your Trailblaze Power/World Level, the better your odds of getting 5★-rarity Relics from a Cavern of Corrosion — so prioritize raising World Level through story/quests before worrying about which cavern to optimize, since farming the right cavern at a low World Level still yields lower-rarity gear.
Should I farm the 4pc Relic set or the 2pc Planar Ornament set first?
The 4pc set (from Caverns of Corrosion) first — a matching 4pc DPS set usually decides more of your damage, while the 2pc Planar Ornament set (from Simulated/Divergent Universe) is best farmed afterward, once your main 4pc set is solid for the role.