diff --git a/JPAJ - Patches/README.md b/JPAJ - Patches/README.md
index 01dd743..2c9c482 100644
--- a/JPAJ - Patches/README.md	
+++ b/JPAJ - Patches/README.md	
@@ -32,4 +32,18 @@ As discussed in the video, each egg events have interal randomization, but there
 - 11 → L + R: Surskit
 - 12 → L + R + A: Taillow
 - 13 → L + R + B: Whismur
-- 14 → L + R + A + B: Wynaut
\ No newline at end of file
+- 14 → L + R + A + B: Wynaut
+
+## Mystery Gift
+One of the custom events we made is getting a Potion or a Pokéball from the delivery guy. Sometimes the delivery guy makes a mistake and gives you an item you weren't supposed to get. Below we'll go a bit more into detail on how this works exactly.
+
+### How does the randomness work?
+The scripts does an RNG call and performs a modulo 1000 operation on it to get a random value. Based on this outcome you either get:
+- Potion (0 - 494)
+- Pokéball (495 - 990)
+- Rare item (991 - 999)
+
+I won't spoil here what the rare items exactly are. But... if you would like to know, they are listed in my Discord server.
+
+Link to the Discord:
+https://discord.gg/pVGFUcCAVS