Added 2 new mythic sea creatures (#11)

Author: jani270

skyblock/seaCreatures.json

@@ -168,5 +168,15 @@
     "name": "Grim Reaper",
     "rarity": "LEGENDARY",
     "spawnMessage": "This can't be! The manifestation of death himself!"
+  },
+  "THUNDER":  {
+    "name": "Thunder",
+    "rarity": "MYTHIC",
+    "spawnMessage": "You hear a massive rumble as Thunder emerges."
+  },
+  "LORD_JAWBUS":  {
+    "name": "Lord Jawbus",
+    "rarity": "MYTHIC",
+    "spawnMessage": "You have angered a legendary creature... Lord Jawbus has arrived"
   }
 }