diff --git a/packages/oldschooljs/src/simulation/monsters/low/n-s/SulphurNagua.ts b/packages/oldschooljs/src/simulation/monsters/low/n-s/SulphurNagua.ts
index 86b3f7d374..53d7d2af33 100644
--- a/packages/oldschooljs/src/simulation/monsters/low/n-s/SulphurNagua.ts
+++ b/packages/oldschooljs/src/simulation/monsters/low/n-s/SulphurNagua.ts
@@ -9,7 +9,7 @@ const SulphurNaguaTable = new LootTable()
 	.add('Fire rune', [10, 40], 26)
 	.add('Fire rune', [40, 60], 14)
 	.add('Chaos rune', [40, 60], 11)
-	.add('Nature rune', [50, 10], 4)
+	.add('Nature rune', [5, 10], 4)
 	.add('Death rune', [40, 60], 2)
 
 	.add('Iron ore', [5, 10], 27)
diff --git a/packages/oldschooljs/src/structures/LootTable.ts b/packages/oldschooljs/src/structures/LootTable.ts
index 880b482d28..9a4d1c5221 100644
--- a/packages/oldschooljs/src/structures/LootTable.ts
+++ b/packages/oldschooljs/src/structures/LootTable.ts
@@ -168,13 +168,17 @@ export default class LootTable {
 
 	public add(
 		item: LootTable | number | string,
-		quantity: number[] | number = 1,
+		quantity: [number, number] | number = 1,
 		weight = 1,
 		options?: LootTableMoreOptions
 	): this {
 		if (this.limit && weight + this.totalWeight > this.limit) {
 			throw new Error('Loot table total weight exceeds limit');
 		}
+		if (Array.isArray(quantity) && (quantity.length !== 2 || quantity[0] > quantity[1])) {
+			throw new Error(`Invalid quantity array: ${quantity}`);
+		}
+
 		if (typeof item === 'string') {
 			return this.add(this.resolveName(item), quantity, weight, options);
 		}
diff --git a/src/lib/shadesKeys.ts b/src/lib/shadesKeys.ts
index 6f3bbb535c..08968dd20f 100644
--- a/src/lib/shadesKeys.ts
+++ b/src/lib/shadesKeys.ts
@@ -194,7 +194,7 @@ const GoldChest = new LootTable({ limit: 143 })
 	.add('Redwood logs', [5, 14], 2)
 	.add('Dragonstone', 1, 2)
 	.add('Clue scroll (elite)', 1, 1)
-	.add('Coins', [1, 3, 160]);
+	.add('Coins', [1, 3160]);
 
 const chests = [
 	{