diff --git a/website/common/locales/en/gear.json b/website/common/locales/en/gear.json
index 601656e905..d286ea7eba 100644
--- a/website/common/locales/en/gear.json
+++ b/website/common/locales/en/gear.json
@@ -1992,6 +1992,8 @@
   "backMystery202001Notes": "These fluffy tails contain celestial power, and also a high level of cuteness! Confers no benefit. January 2020 Subscriber Item.",
   "backMystery202004Text": "Mighty Monarch Wings",
   "backMystery202004Notes": "Make a quick flutter to the nearest flowery meadow or migrate across the continent with these beautiful wings! Confers no benefit. April 2020 Subscriber Item.",
+  "backMystery202005Text": "Wondrous Wyvern Wings",
+  "backMystery202005Notes": "Despite their slight tatters, these wings can still carry you wherever you need to travel. Confers no benefit. May 2020 Subscriber Item.",
 
   "backSpecialWonderconRedText": "Mighty Cape",
   "backSpecialWonderconRedNotes": "Swishes with strength and beauty. Confers no benefit. Special Edition Convention Item.",
@@ -2172,6 +2174,8 @@
   "headAccessoryMystery201908Notes": "If wearing horns floats your goat, you're in luck! Confers no benefit. August 2019 Subscriber Item.",
   "headAccessoryMystery202004Text": "Mighty Monarch Antennae",
   "headAccessoryMystery202004Notes": "They twitch just a bit if the scent of flowers drifts by--use them to find a pretty garden! Confers no benefit. April 2020 Subscriber Item.",
+  "headAccessoryMystery202005Text": "Wondrous Wyvern Horns",
+  "headAccessoryMystery202005Notes": "With such mighty horns, what creature dares challenge you? Confers no benefit. May 2020 Subscriber Item.",
   "headAccessoryMystery301405Text": "Headwear Goggles",
   "headAccessoryMystery301405Notes": "\"Goggles are for your eyes,\" they said. \"Nobody wants goggles that you can only wear on your head,\" they said. Hah! You sure showed them! Confers no benefit. August 3015 Subscriber Item.",
 
diff --git a/website/common/locales/en/subscriber.json b/website/common/locales/en/subscriber.json
index b1e17020f4..79fbaeae3d 100644
--- a/website/common/locales/en/subscriber.json
+++ b/website/common/locales/en/subscriber.json
@@ -173,6 +173,7 @@
     "mysterySet202002": "Stylish Sweetheart Set",
     "mysterySet202003": "Barbed Battler Set",
     "mysterySet202004": "Mighty Monarch Set",
+    "mysterySet202005": "Wondrous Wyvern Set",
     "mysterySet301404": "Steampunk Standard Set",
     "mysterySet301405": "Steampunk Accessories Set",
     "mysterySet301703": "Peacock Steampunk Set",
diff --git a/website/common/script/content/gear/sets/mystery.js b/website/common/script/content/gear/sets/mystery.js
index 313d7ade58..dc7b8538f1 100644
--- a/website/common/script/content/gear/sets/mystery.js
+++ b/website/common/script/content/gear/sets/mystery.js
@@ -412,6 +412,12 @@ const back = {
     mystery: '202004',
     value: 0,
   },
+  202005: {
+    text: t('backMystery202005Text'),
+    notes: t('backMystery202005Notes'),
+    mystery: '202005',
+    value: 0,
+  },
 };
 
 const body = {
@@ -910,6 +916,12 @@ const headAccessory = {
     mystery: '202004',
     value: 0,
   },
+  202005: {
+    text: t('headAccessoryMystery202005Text'),
+    notes: t('headAccessoryMystery202005Notes'),
+    mystery: '202005',
+    value: 0,
+  },
   301405: {
     text: t('headAccessoryMystery301405Text'),
     notes: t('headAccessoryMystery301405Notes'),
diff --git a/website/raw_sprites/spritesmith/gear/events/mystery_202005/back_mystery_202005.png b/website/raw_sprites/spritesmith/gear/events/mystery_202005/back_mystery_202005.png
new file mode 100644
index 0000000000..4ce2522f39
Binary files /dev/null and b/website/raw_sprites/spritesmith/gear/events/mystery_202005/back_mystery_202005.png differ
diff --git a/website/raw_sprites/spritesmith/gear/events/mystery_202005/headAccessory_mystery_202005.png b/website/raw_sprites/spritesmith/gear/events/mystery_202005/headAccessory_mystery_202005.png
new file mode 100644
index 0000000000..b8a85e0db9
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diff --git a/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_back_mystery_202005.png b/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_back_mystery_202005.png
new file mode 100644
index 0000000000..d35cdc8a29
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diff --git a/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_headAccessory_mystery_202005.png b/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_headAccessory_mystery_202005.png
new file mode 100644
index 0000000000..5f6b5b9ed3
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diff --git a/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_set_mystery_202005.png b/website/raw_sprites/spritesmith/gear/events/mystery_202005/shop_set_mystery_202005.png
new file mode 100644
index 0000000000..88266e244e
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diff --git a/website/raw_sprites/spritesmith_large/promo_mystery_202004.png b/website/raw_sprites/spritesmith_large/promo_mystery_202004.png
deleted file mode 100644
index 28d77d385e..0000000000
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diff --git a/website/raw_sprites/spritesmith_large/promo_mystery_202005.png b/website/raw_sprites/spritesmith_large/promo_mystery_202005.png
new file mode 100644
index 0000000000..79a0c40eb3
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