diff --git a/plans/0000-roadmap.md b/plans/0000-roadmap.md
index 84e8963..8031e02 100644
--- a/plans/0000-roadmap.md
+++ b/plans/0000-roadmap.md
@@ -122,7 +122,18 @@ the real design happens. The blurbs here stay deliberately loose.
   session's first prompt carries a recap built from the campaign log, so
   the DM comes back remembering the story and not just the clock. *You
   can now: your character persists across sessions.*
-- [ ] **Phase 11 and beyond: ideas that have to earn it.** Character
+- [ ] **Phase 11: The DM's storytelling voice.** Instructions that teach
+  the DM craft, not just rules, drawn from real storytelling theory:
+  cadence and rhythm (short beats when danger is close, longer lines
+  when the world is calm), scene shape (arrive late, leave early, open
+  on something moving), sensory economy (one concrete detail beats
+  three adjectives), tension that rises and rests across a session, and
+  a reply whose length follows the weight of the moment. The
+  instructions live in the layer fragments the context stack reads, so
+  the base game sets the craft and a world or module tunes the voice.
+  *You can now: feel the difference between a bar fight and a quiet
+  morning.*
+- [ ] **Phase 12 and beyond: ideas that have to earn it.** Character
   creation, combat and initiative, background world motion, advancement,
   name generation, colors and theming (the styles all live in
   `markdown::style` waiting for it). Each one starts as a conversation,