I modified this one since it has been down and combined it with parts of elderberries and within 24 hours, BAM.. Signet #2. Got it in Alcaranus. Here is the code, if someone can figure out the exact mob that dropped it.
Thanks to La7 for a great sewer profile portion!
[14:32:30.197 N] [RadsProfileManager beta] Been asked to load a new profile, which is Elderberries_AlcarnusB.xml
[14:32:30.673 N] Loaded profile [A2 - Inferno] Champion-Hunting 1.22 Elderberries(part2b)
[14:32:30.673 N] [RadsProfileManager beta] Reset death count to 0.
[14:32:31.707 D] Replaced hook [ProfileOrderBehavior_Hook] 182180aa-6aae-4255-8266-6cbd6bc7698f
[14:32:31.806 D] Replaced hook [ProfileOrderBehavior_Hook] 2e5a2939-6de9-478c-86c5-28eaa95907e3
[14:32:31.807 D] Generating path to Moving to use waypoint - <324.2319, 291.6554, 1.64563>
[14:32:31.814 D] Raycast path generated.
[14:32:31.814 D] Generated path to <324.2319, 291.6554, 1.64563> (Moving to use waypoint) with 1 hops.
[14:32:32.311 N] Using Waypoint Waypoint-28 Number:4
[14:32:34.730 N] ========== Grid segmentation resetting!!! ============
[14:32:35.808 D] Navigator.Clear
[14:32:35.849 D] Replaced hook [ProfileOrderBehavior_Hook] cf35438e-0629-44ec-934c-4ca9af380ea3
[14:32:36.068 D] Replaced hook [ProfileOrderBehavior_Hook] f9af0450-39c2-4342-8e60-3538519048ae
[14:32:36.100 D] Generating path to UNKNOWN - <1394.87, 1195.986, 185.2858>
[14:32:36.101 D] Raycast path generated.
[14:32:36.101 D] Generated path to <1394.87, 1195.986, 185.2858> () with 1 hops.
[14:32:36.713 D] [GilesTrinity] Destructible: Name=caOut_Rock_Cairn-251. SNO=3689, Range=6.117708. Needed range=15. Radius=1. Type=Destructible. Using power=Monk_FistsofThunder
[14:32:36.835 D] Navigator.Clear
[14:32:36.906 D] Replaced hook [ProfileOrderBehavior_Hook] fe3fe03c-f512-47e3-8457-0cb95b9375c5
[14:32:36.907 D] Generating path to UNKNOWN - <1403.513, 1124.326, 184.4915>
[14:32:36.929 D] Raycast path generated.
[14:32:36.929 D] Generated path to <1403.513, 1124.326, 184.4915> () with 1 hops.
[14:32:41.574 D] Navigator.Clear
[14:32:41.657 D] Replaced hook [ProfileOrderBehavior_Hook] 21a4da33-d0f4-4394-ac7c-56aeb45182a9
[14:32:41.662 D] Generating path to UNKNOWN - <1440.844, 1068.988, 184.4915>
[14:32:41.746 D] Successfully generated path from {X=161,Y=272} to {X=139,Y=288} in 00:00:00.0005634 with 25(4) hops
[14:32:41.746 D] Client path generated.
[14:32:41.746 D] Generated path to <1440.844, 1068.988, 184.4915> () with 4 hops.
[14:32:43.046 D] Navigator.Clear
[14:32:43.122 D] Replaced hook [ProfileOrderBehavior_Hook] 18154c14-5a12-4786-9b43-efe5ab17b5a9
[14:32:43.710 D] Generating path to UNKNOWN - <1521.732, 1126.93, 184.4915>
[14:32:43.808 D] Successfully generated path from {X=233,Y=286} to {X=258,Y=320} in 00:00:00.0011250 with 37(4) hops
[14:32:43.808 D] Client path generated.
[14:32:43.808 D] Generated path to <1521.732, 1126.93, 184.4915> () with 4 hops.
[14:32:46.189 D] Navigator.Clear
[14:32:46.249 D] Replaced hook [ProfileOrderBehavior_Hook] 1824d1ff-831d-43be-af28-65d21fa26f2f
[14:32:46.250 D] Generating path to UNKNOWN - <1568.454, 1200.834, 184.4915>
[14:32:46.272 D] Raycast path generated.
[14:32:46.272 D] Generated path to <1568.454, 1200.834, 184.4915> () with 1 hops.
[14:32:51.742 D] Navigator.Clear
[14:32:51.825 D] Replaced hook [ProfileOrderBehavior_Hook] c069f4ea-893c-4832-ac67-c5642e141383
[14:32:51.826 D] Generating path to UNKNOWN - <1452.544, 1295.751, 186.4916>
[14:32:51.843 D] Raycast path generated.
[14:32:51.843 D] Generated path to <1452.544, 1295.751, 186.4916> () with 1 hops.
[14:32:56.944 D] Navigator.Clear
[14:32:57.002 D] Replaced hook [ProfileOrderBehavior_Hook] 8934cbe6-5316-4b4c-9e8e-f3ca6d2c8d29
[14:32:57.008 D] Generating path to UNKNOWN - <1527.903, 1263.727, 184.4915>
[14:32:57.026 D] Raycast path generated.
[14:32:57.026 D] Generated path to <1527.903, 1263.727, 184.4915> () with 1 hops.
[14:32:58.502 D] Navigator.Clear
[14:32:58.601 D] Replaced hook [ProfileOrderBehavior_Hook] 176ee6b1-8540-4747-a6f1-1848cea910ad
[14:32:58.602 D] Generating path to UNKNOWN - <1503.84, 1282.373, 184.4916>
[14:32:58.620 D] Raycast path generated.
[14:32:58.620 D] Generated path to <1503.84, 1282.373, 184.4916> () with 1 hops.
[14:32:59.019 D] Navigator.Clear
[14:32:59.068 D] Replaced hook [ProfileOrderBehavior_Hook] 00217c2d-dfc1-4732-b9db-249d59b12def
[14:32:59.075 D] Generating path to UNKNOWN - <1409.51, 1230.028, 184.4915>
[14:32:59.094 D] Raycast path generated.
[14:32:59.094 D] Generated path to <1409.51, 1230.028, 184.4915> () with 1 hops.
[14:33:01.322 D] Navigator.Clear
[14:33:01.372 D] Replaced hook [ProfileOrderBehavior_Hook] b6c01939-972b-4a9e-9ec4-1690274134c5
[14:33:01.380 D] Generating path to UNKNOWN - <1434.616, 1303.996, 185.3762>
[14:33:01.396 D] Raycast path generated.
[14:33:01.396 D] Generated path to <1434.616, 1303.996, 185.3762> () with 1 hops.
[14:33:02.883 D] Navigator.Clear
[14:33:02.941 D] Replaced hook [ProfileOrderBehavior_Hook] dbdcaf23-94d7-42e4-847d-7ed2b1146df1
[14:33:02.946 D] Generating path to UNKNOWN - <1192.354, 1281.919, 184.5763>
[14:33:02.957 D] Raycast path generated.
[14:33:02.957 D] Generated path to <1192.354, 1281.919, 184.5763> () with 1 hops.
[14:33:07.165 D] ChampionBase
[14:33:07.166 D] Teleporter
[14:33:08.504 D] ChampionBase
[14:33:08.504 D] Teleporter
[14:33:11.936 D] [GilesTrinity] Safely handled exception getting gold pile amount for item GoldCoins-941
[14:33:12.305 D] [GilesTrinity] Barricade: Name=caOut_StingingWinds_Barricade_A-872. SNO=181228, Range=15.12467. Needed range=15. Radius=5.247921. Type=Barricade. Using power=Monk_FistsofThunder
[14:33:16.453 D] Navigator.Clear
[14:33:16.508 D] Replaced hook [ProfileOrderBehavior_Hook] 4062cbd4-aa8c-4ece-9eb3-3b6b75c75e88
[14:33:16.509 D] Generating path to UNKNOWN - <1148.697, 1416.206, 184.4916>
[14:33:16.511 D] Raycast path generated.
[14:33:16.511 D] Generated path to <1148.697, 1416.206, 184.4916> () with 1 hops.
[14:33:19.233 D] Nightmarish
[14:33:19.233 D] Minion
[14:33:19.241 D] Nightmarish
[14:33:19.241 D] Minion
[14:33:19.256 D] Rare
[14:33:19.257 D] Nightmarish
[14:33:19.584 D] Minion
[14:33:24.976 N] [GilesTrinity] No more space to pickup a 2-slot item, now running town-run routine.
(Edited out unrelated stuff)
[14:33:31.133 N] ========== Grid segmentation resetting!!! ============
[14:33:35.748 D] [GilesTrinity] GSDebug: Stash routine started.
[14:33:37.686 D] Parsing parent type table: 167097204
[14:33:38.054 N] +=+=+=+=+=+=+=+=+ LEGENDARY FOUND +=+=+=+=+=+=+=+=+
[14:33:38.054 N] + Name: Leoric's Signet (Ring)
[14:33:38.054 N] + Score: 65
[14:33:38.054 N] + Attributes: Strength=29. Crit Chance %=1
[14:33:38.054 N] +=+=+=+=+=+=+=+=++=+=+=+=+=+=+=+=++=+=+=+=+=+=+=+=+
[14:33:38.057 D] Moving item args: <itemId:2073887269, ownerId:2014117894, InventorySlot

layerSharedStash, column:3, row:3>
[14:33:38.061 D] [GilesTrinity] GSDebug: Stash routine ending sequence...
[14:33:38.569 D] [GilesTrinity] GSDebug: Stash routine finished.