The ancient chest is found in the Great Olm's room in the Chambers of Xeric raid, and can be searched for rewards after defeating the Great Olm. Depending on the points obtained in the raid, players have a chance to obtain a reward from the unique drop table. If the player does not roll into the unique drop table, they will obtain two rolls of standard loot instead (which cannot both be the same loot), with their quantity depending on points obtained.
A player receives a unique reward from the ancient chest.
Regardless of whether a unique drop was obtained, players may always additionally obtain the dark journal if they do not have it already, and the metamorphic dust/twisted ancestral colour kit for players completing a challenge mode raid if successfully rolled on.
By default, a white light will shine above the chest; if the player obtained an item from the unique drop table, the light is purple; if the player obtained a metamorphic dust, it is turquoise; if the player obtained a twisted ancestral colour kit, it is green. If multiple such drops are obtained simultaneously, the light alternates between each appropriate colour.
Unlike the other two raids, if the player attempts to leave the Chambers of Xeric with loot in the chest, they will be lost upon exiting.
Upon the Great Olm's death, if a unique reward item is given, it will be announced in the game chat.
For every 8,676 total points obtained, a 1% chance to obtain a unique loot is given.
This chance is capped at 65.7% (570,000 points) - any further points will be sent to roll for a second unique loot. For example, a team who possesses 855,000 points in total has a 65.7% chance to receive a unique loot, and then a 32.85% chance to obtain a second unique loot. Up to six unique rewards can be obtained per raid, assuming that there are enough points to roll for them.
In groups, the player's points will also determine who is more likely to obtain the unique drop if rolled on, with higher points giving a greater chance at it.
Once the game has chosen which player will receive the unique loot, an item is chosen from the table below. The higher the weighting, the more likely a player will receive that item.
Accessing this table is required in order to be eligible for Olmlet.
|Dexterous prayer scroll||1||20/69||39,095,777||48,000|
|Arcane prayer scroll||1||20/69||3,577,389||48,000|
|Dragon hunter crossbow||1||4/69||60,116,691||48,000|
|Ancestral robe top||1||3/69||181,793,004||72,000|
|Ancestral robe bottom||1||3/69||143,250,298||48,000|
|Death rune||1–3,640||2 × 1/33||93–338,520||108–393,120|
|Blood rune||1–4,095||2 × 1/33||196–802,620||240–982,800|
|Soul rune||1–6,553||2 × 1/33||235–1,539,955||180–1,179,540|
|Rune arrow||1–9,362||2 × 1/33||97–908,114||240–2,246,880|
|Dragon arrow||1–648||2 × 1/33||951–616,248||480–311,040|
|Grimy ranarr weed||1–163 (noted)||2 × 1/33||6,296–1,026,248||18–2,934|
|Grimy toadflax||1–248 (noted)||2 × 1/33||4,272–1,059,456||11–2,728|
|Grimy irit leaf||1–809 (noted)||2 × 1/33||1,668–1,349,412||10–8,090|
|Grimy avantoe||1–404 (noted)||2 × 1/33||4,000–1,616,000||10–4,040|
|Grimy kwuarm||1–338 (noted)||2 × 1/33||3,746–1,266,148||12–4,056|
|Grimy snapdragon||1–97 (noted)||2 × 1/33||7,649–741,953||12–1,164|
|Grimy cadantine||1–394 (noted)||2 × 1/33||3,954–1,557,876||13–5,122|
|Grimy lantadyme||1–526 (noted)||2 × 1/33||1,775–933,650||13–6,838|
|Grimy dwarf weed||1–655 (noted)||2 × 1/33||2,337–1,530,735||14–9,170|
|Grimy torstol||1–161 (noted)||2 × 1/33||4,132–665,252||15–2,415|
|Silver ore||1–6,553 (noted)||2 × 1/33||34–222,802||45–294,885|
|Coal||1–6,553 (noted)||2 × 1/33||242–1,585,826||27–176,931|
|Gold ore||1–2,978 (noted)||2 × 1/33||202–601,556||90–268,020|
|Mithril ore||1–4,095 (noted)||2 × 1/33||81–331,695||97–397,215|
|Adamantite ore||1–789 (noted)||2 × 1/33||733–578,337||240–189,360|
|Runite ore||1–65 (noted)||2 × 1/33||10,878–707,070||1,920–124,800|
|Uncut sapphire||1–693 (noted)||2 × 1/33||263–182,259||15–10,395|
|Uncut emerald||1–923 (noted)||2 × 1/33||471–434,733||30–27,690|
|Uncut ruby||1–541 (noted)||2 × 1/33||1,054–570,214||60–32,460|
|Uncut diamond||1–255 (noted)||2 × 1/33||2,295–585,225||120–30,600|
|Ancient tablet||1||1/10[d 1]||Not sold||45,000|
|Lizardman fang||1–4,681||2 × 1/33||26–121,706||36–168,516|
|Pure essence||1–65,535 (noted)||2 × 1/33||1–65,535||2–131,070|
|Saltpetre||1–5,461 (noted)||2 × 1/33||5–27,305||3–16,383|
|Teak plank||1–1,365 (noted)||2 × 1/33||778–1,061,970||300–409,500|
|Mahogany plank||1–548 (noted)||2 × 1/33||2,097–1,149,156||900–493,200|
|Dynamite||1–2,427 (noted)||2 × 1/33||916–2,223,132||60–145,620|
|Torn prayer scroll||1||2 × 1/33||46,652||48,000|
|Dark relic||1||2 × 1/33||Not sold||0|
- ^ Only received if players do not own one or have not consumed it already. Replaces one of the loot rolls.
- ^ The dark journal is only received if players do not have it stored in their bank.
- ^ The elite clue scroll is only rolled when the player does not get a broadcasted unique reward.
- ^ The elite clue scroll drop rate increases to 1/11 after unlocking the elite Combat Achievements rewards tier.
- ^ Olmlet is only rolled when the player gets a broadcasted unique reward; with 26,025 points per raid, the Olmlet rate is ~1/1,765.
- ^ 5.0 5.1 Only obtainable in Challenge Mode and if the raid was completed within a certain time.
template=Calculator:Chambers of Xeric/Template
param = personalPoints|Personal points|20000|int|0-|
param = groupPoints|Group points|60000|int|0-|
param = teamSize|Team size|3|string|1-100|
param = timeTaken|Time taken (minutes, optional)||string||
param = split|Split uniques?|yes|check|yes,no
autosubmit = disabled
Please input the data and submit the form.