diff --git a/pages/cypher/index.md b/pages/cypher/index.md
index 0804d70..f6fdf35 100644
--- a/pages/cypher/index.md
+++ b/pages/cypher/index.md
@@ -17,6 +17,8 @@ options, easily adaptable to any setting.
 Custom content (descriptors, etc.) I've created for games in the Cypher system can be found at [this page of
 homebrew](homebrew). Additionally, I use the following house rules:
 
+* [Cypher Volatility](https://callmepartario.github.io/og-csrd/#optional-rule-exceeding-cypher-limits): The PC's GM
+  intrusion rate is raised by 1 for each cypher over their limit, and they risk losing the cypher as well.
 * [Optional spellcasting uses pool points, not recovery rolls](homebrew#cost-of-optional-spellcasting)
 * [Recovery rolls can be applied in any
   order](https://callmepartario.github.io/og-csrd/#house-rule-making-recovery-rolls-in-any-order)