diff --git a/data/sql/updates/pending_db_world/rev_1787183891069090300.sql b/data/sql/updates/pending_db_world/rev_1787183891069090300.sql
new file mode 100644
index 0000000000..3b1dd300ca
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1787183891069090300.sql
@@ -0,0 +1,24 @@
+--
+-- Sartharion (Obsidian Sanctum 25-man) base gear loot pool structure
+-- Splits the single 10-item ilvl 213 gear pool of reference 34166 into the two pools
+-- evidenced by recorded retail kills (21 kills), so each kill yields exactly one item
+-- from each pool instead of two draws from one pool.
+-- Issue: azerothcore/azerothcore-wotlk#26276
+
+-- Sartharion 25-man (2 pools: 5+5)
+UPDATE `creature_loot_template` SET `MinCount`=1, `MaxCount`=1
+    WHERE `Entry`=31311 AND `Item`=1 AND `Reference`=34166;
+
+-- Pool A (5 items)
+UPDATE `reference_loot_template` SET `GroupId`=1 WHERE `Entry`=34166 AND `Item`=40431; -- Fury of the Five Flights
+UPDATE `reference_loot_template` SET `GroupId`=1 WHERE `Entry`=34166 AND `Item`=40437; -- Concealment Shoulderpads
+UPDATE `reference_loot_template` SET `GroupId`=1 WHERE `Entry`=34166 AND `Item`=40446; -- Dragon Brood Legguards
+UPDATE `reference_loot_template` SET `GroupId`=1 WHERE `Entry`=34166 AND `Item`=40451; -- Hyaline Helm of the Sniper
+UPDATE `reference_loot_template` SET `GroupId`=1 WHERE `Entry`=34166 AND `Item`=40453; -- Chestplate of the Great Aspects
+
+-- Pool B (5 items)
+UPDATE `reference_loot_template` SET `GroupId`=2 WHERE `Entry`=34166 AND `Item`=40432; -- Illustration of the Dragon Soul
+UPDATE `reference_loot_template` SET `GroupId`=2 WHERE `Entry`=34166 AND `Item`=40433; -- Wyrmrest Band
+UPDATE `reference_loot_template` SET `GroupId`=2 WHERE `Entry`=34166 AND `Item`=40438; -- Council Chamber Epaulets
+UPDATE `reference_loot_template` SET `GroupId`=2 WHERE `Entry`=34166 AND `Item`=40439; -- Mantle of the Eternal Sentinel
+UPDATE `reference_loot_template` SET `GroupId`=2 WHERE `Entry`=34166 AND `Item`=40455; -- Staff of Restraint