The most expensive mistake in this event is assumption, not luck. Honkai: Star Rail players routinely burn a full day of power on cavern relics expecting double drops, then wonder why the count looks normal. This guide separates the two relic families, prices the 240-power day, covers the new 4.6 cavern sets, and settles whether Pearl is worth a 90-pull guarantee.
| Item | Verdict | Basis |
|---|---|---|
| Planar Split | Planar Ornaments only | Official notice, 2026-10-11 11:00 |
| Immersifier cost | 40 Trailblaze Power | Six runs per 240-power day |
| New relics | Cavern sets excluded from the bonus | Official 4.6 patch notes |
| Pearl | Pull if you lack an Elation slot | Limited five-star, 90-pull cap |
Applicable version: 4.6 Before the Moon Rises, Dance With the Beast (live 2026-09-28)
Honkai: Star Rail 4.6 Planar Split: what actually doubles
The official notice states that Planar Ornaments drop at double rate during Planar Split, with the notice dated October 11 at 11:00 . Planar Ornaments come from the Simulated Universe, and that is the only place the bonus applies.
It is not a blanket relic bonus
This is not "double relics"; it is double Planar Ornaments, meaning the rope and sphere two-piece slot only . Cavern relics, the head, hands, body, and feet four-piece set, come from a different activity and get nothing.
Why the bonus is worth more than it looks
The Planar Ornament sub-stat pool is narrower than the cavern pool, so the odds of a usable roll are higher. If a character is missing one elemental damage sphere with crit on it, this window is the best odds you will get.
Honkai: Star Rail Planar Ornament choices
Planar Ornaments come as two-piece sets: the rope rolls attack or HP, the sphere rolls elemental damage or effect hit rate . Set effects usually key off a speed threshold or a crit condition, so confirm the character can trigger it before farming the set.
Do the speed math first
Many Planar sets only activate above a speed threshold, and below it the set does nothing. Add base speed, light cone, and sub-stats first, then decide whether the set is worth trading attack sub-stats for.
Do not force crit conditions
A set that needs a specific crit rate to trigger is a blank at low crit rate. That is not an argument against the set; it is an argument for fixing crit rate before evaluating set value.
Honkai: Star Rail 4.6 new relics: cavern versus planar roles
Patch 4.6 adds the cavern sets Dream-Spotting Performer and Heretic Who Devoured the Forbidden Fruit, farmed from the Corrosion Cave Melody Path . Both are four-piece sets, so they do not conflict with Planar Ornaments but do compete for the same power.
How the new sets split
New cavern sets usually match a new damage pattern or trigger condition . Read the trigger clause: wording like "after using Ultimate" or "when dealing damage over time" means the set is built for a specific rotation, not for everyone.
Which to farm first
Planar Ornaments first, because only they are doubled. Cavern relics can wait until the event ends, and this ordering doubles the planar output for the same power.
Honkai: Star Rail 4.6 power requirements
One Immersifier costs 40 Trailblaze Power and natural regeneration gives 240 a day, so six runs. Planar stages drop one ornament per run, doubled to twelve during the event, with usability still decided by sub-stats.
| Item | Amount | Conversion |
|---|---|---|
| Daily power | 240 | Six Immersifier runs |
| Planar output in event | 12 per day | About 6 usable at a 50 percent hit rate |
| Relic leveling | Multiple rounds each | Credits plus relic EXP |
| Pulls | 90 soft cap | 160 Stellar Jade per pull, 28,800 worst case |
A week that fits
Monday through Thursday on Planar Ornaments while the bonus is live, Friday and Saturday on cavern relics and trace materials, Sunday on Simulated Universe weeklies. The bonus has a window; trace materials do not.
Honkai: Star Rail 4.6: is Pearl worth pulling
Verdict first: pull Pearl if you lack an Elation slot or want a Cryo damage-over-time core; skip if your Elation team is already finished. She is not a mandatory mechanic character .
Three account types
New accounts under six five-stars: pull, since an Elation slot travels across modes. Mid-game accounts clearing Forgotten Hall: check the light cone banner, because Her Colour for Tomorrow moves damage more than an early eidolon. Veterans: pull only for preference, as 4.6 adds no mandatory mechanic.
Build before banner
Can you build her? Pearl wants new trace materials and relics, so if the Planar Split week produces nothing usable, the pull sits in storage. The same logic behind Honkai: Star Rail team comps applies here: roles are scarcer than numbers.
Honkai: Star Rail 4.6 Forgotten Hall speed tuning
Forgotten Hall grades on cycles, not on a single burst window . The goal is therefore one extra turn inside the cycle cap, not one bigger hit.
Why speed matters
Putting the carry just after the supports lets buffs land inside the same cycle . That is why speed boots show up more often than attack boots in Forgotten Hall clears: not because damage is higher, but because the team gets another turn.
Never cut the battery
The battery decides ultimate frequency. Without it, the carry's burst window slips from every two cycles to every three , which in a fixed cycle cap is the difference between one star and two.
Honkai: Star Rail FAQ
Does Planar Split double cavern relics too?
A: No. It only doubles Planar Ornaments, the rope and sphere two-piece slot; cavern relics come from a separate activity .
How much power does one Immersifier cost?
A: 40 Trailblaze Power, and 240 daily regeneration equals six runs, or about 12 Planar Ornaments during the event.
Where do the 4.6 relics drop?
A: Corrosion Cave Melody Path, which drops Dream-Spotting Performer and Heretic Who Devoured the Forbidden Fruit .
Does Pearl need her signature light cone?
A: Not strictly, but Her Colour for Tomorrow moves damage more directly than an early eidolon .
Why speed boots in Forgotten Hall?
A: So the carry acts after the supports and buffs land in the same cycle; an extra turn beats a bigger single hit .
Honkai: Star Rail October action list
- Spend all event-window power on Planar Ornaments, none on cavern relics.
- Do the speed math before trading attack sub-stats for a set bonus.
- Skip crit-conditional sets until crit rate is actually high enough.
- Confirm trace materials and relics exist before pulling Pearl.
- Tune Forgotten Hall around speed lines and keep the battery slot.
Relic tables for the same patch are updated in the guides section on gghubs.com, and the Planar Split end time follows the in-game event panel (GameHub).