rules updates

add dread wurm and werebeasts
fix backlink for magic items
update rules for + abilities

src/pages/magic-items/rod-of-parrying.md

@@ -0,0 +1,14 @@
+---
+title: Rod of Parrying
+description: A Rod of Parrying for OSR gaming.
+date_pub: 2024-03-11T18:07:59.000-04:00
+section: magic items
+content_type: feature
+short_code: mrp
+---
+
+A 5' long, 2" diameter, cobalt-blue metal rod inscribed with cryptic runes.
+
+-   +2 to attack and damage (1d8+1).
+-   Instead of attacking, may use rod defensively to parry an incoming attack, gaining +4 AC until end of round.
+    -   Can't be used to parry while retreating.