diff --git a/README.md b/README.md
index 6754d2b..b2e38cb 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,8 @@ Included are basic character creation and gameplay guides with one species, clas
 
 - When making a subclass, I would recommend copying the base class for reference.
 - You can convert Animals to Monsters or vice versa. They follow the structure.
+- If you decide to create your own spells (or tweak existing ones), I highly recommend making them [fallible](https://youtu.be/eyb4FDvzLeE). Because they're not.
+	- Unless 4E and 3E are released under the CC-By, this is the best workaround I can give ya'.
 
 ## Contributing