Adds referee screen and deities.

Updates bestiary with links to nonhuman racial modifiers.

src/pages/rules/adventuring.md

@@ -104,23 +104,22 @@ To navigate to a location in a busting city, make a Reaction Roll (2d6) + CHA mo
 
 1. **Check Stealth**: Referee rolls for stealth, if applicable.
 
--   Each side that's being relatively stealthy (quiet, douses torches, etc.) has a base 2-in-6 chance of not being spotted.
--   Parties carrying an active light source typically can not have stealth.
--   If only one side has stealth, they may usually make a free attack (or can pass unnoticed).
--   If all sides have stealth, they miss each other.
+    - Each side that's being relatively stealthy (quiet, douses torches, etc.) has a base 2-in-6 chance of not being spotted.
+    - Parties carrying an active light source typically can not have stealth.
+    - If only one side has stealth, they may usually make a free attack (or can pass unnoticed).
+    - If all sides have stealth, they miss each other.
 
 2. **Determine Distance**: Referee determines how far away the characters are from the encounter.
 
--   Often determined by the nature of the encounter itself, but may be determined randomly:
-    -   Dungeon: 2d6 x 10'
-    -   Wilderness: 4d6 x 10 yards (or 1d4 x 10 yards if either side is surprised).
+    - Often determined by the nature of the encounter itself, but may be determined randomly:
+        - Dungeon: 2d6 x 10'
+        - Wilderness: 4d6 x 10 yards (or 1d4 x 10 yards if either side is surprised).
 
-3. **Roll Initiative**: Each side that has can has stealth rolls 1d20, highest roll moves first.
+3. **Roll Initiative**: Each side that has stealth rolls 1d20, highest roll moves first.
 4. **Choose Actions**: Each side decides how they will respond in initiative order, and the encounter proceeds.
-
--   Players decide how their characters will act.
--   Creature actions are often determined by the nature of the encounter itself, but may be determined randomly.
-    -   If creature / NPC reaction isn't obvious, roll 2d6 (+ CHA modifier, if someone tries to communicate).
+    - Players decide how their characters will act.
+    - Creature actions are often determined by the nature of the encounter itself, but may be determined randomly.
+        - If creature / NPC reaction isn't obvious, roll 2d6 (+ CHA modifier, if someone tries to communicate).
 
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src/pages/rules/basics.md

@@ -25,9 +25,14 @@ Sometimes, dice are rolled. These dice are described by how many sides they have
 
 Simple tasks are assumed to succeed. If the task is dangerous or complicated, roll the dice for a _check_.
 
-For most checks, roll a 20-sided die (d20) under a character's most relevant _ability_ score.
+For most checks, roll a 20-sided die (d20) at-or-over the difference of (20 - the character's most relevant _ability_ score).
 
-For hard (or very hard) tasks, you can subtract 1 (or 2) from the ability before the roll.
+-   For hard (or very hard) tasks, you can subtract 1 (or 2) from the roll before the die is thrown.
+
+Some results are special:
+
+-   A natural 20 represents a critical success: the check automatically succeeds, and often includes a bonus for the roller.
+-   A natural 1 is a critical failure: the check automatically fails, and the attempt often causes an additional complication or challenge for the roller.
 
 ### Abilities
 

src/pages/rules/combat.md

@@ -19,7 +19,14 @@ That having been said, fights do occur, and when they do, the following steps ar
 2. **Roll Initiative**: Each side that can attack rolls 1d20, highest roll attacks first.
 3. **Winning Side Actions**: Each character or monster gets a move and an action, with either one occurring first.
 
-    - **Morale Check**: Monsters who've been severely wounded or seen their leaders killed may flee. Roll 2d6 under morale score or the monsters surrender / flee.
+    - **Morale Check**: Creatures who've been severely wounded or seen their leaders killed may flee.
+
+        - Roll 2d6 under morale score or the monsters surrender / flee.
+            - After 2 successes in a fight, no further checks.
+        - When to check morale:
+            - After the first death on a side, and
+            - When a side is half killed or incapacitated.
+
     - **Move**: Move up to full speed
         - If prone, use 1/2 movement to stand up.
         - If _engaged_ with an enemy at the start of the move, make a _fighting retreat_ or they get a free attack.