diff --git a/public/resources/wilds/wilds.json b/public/resources/wilds/wilds.json
index 65c1e557..6ee215b9 100644
--- a/public/resources/wilds/wilds.json
+++ b/public/resources/wilds/wilds.json
@@ -13,6 +13,7 @@
       {
         "id": "beast_den",
         "name": "Beast Den",
+        "base_tier": 4,
         "preferred_terrains": ["grassland", "enchanted_forest", "hills"],
         "sprite": "terrain/lair_beast_den.png",
         "spawn_pool": {
@@ -25,6 +26,7 @@
       {
         "id": "corrupted_hollow",
         "name": "Corrupted Hollow",
+        "base_tier": 6,
         "preferred_terrains": ["swamp"],
         "sprite": "terrain/lair_corrupted_hollow.png",
         "spawn_pool": {
@@ -37,6 +39,7 @@
       {
         "id": "volcanic_fissure",
         "name": "Volcanic Fissure",
+        "base_tier": 7,
         "preferred_terrains": ["volcano", "desert", "hills"],
         "sprite": "terrain/lair_volcanic_fissure.png",
         "spawn_pool": {
@@ -49,6 +52,7 @@
       {
         "id": "ancient_construct_site",
         "name": "Ancient Construct Site",
+        "base_tier": 8,
         "preferred_terrains": ["grassland", "hills", "desert", "tundra"],
         "sprite": "terrain/lair_construct_site.png",
         "spawn_pool": {
@@ -61,6 +65,7 @@
       {
         "id": "wyvern_nest",
         "name": "Wyvern Nest",
+        "base_tier": 5,
         "preferred_terrains": ["hills", "mountains"],
         "sprite": "terrain/lair_wyvern_nest.png",
         "spawn_pool": {