All Unearthed Arcana content is in the sidebar under 'variant rules', coupled with variant rules from other books.

• Variant Rules
  • Character
    • Contacts
    • Reputation
    • Honor
    • Taint
    • Sanity
  • Racial Variants
    • Environmental Variants
    • Elemental Variants
  • Class Variants
    • Class Variant List
    • Gestalt Characters
  • New Classes
    • Prestigious Classes
    • Racial Paragon Classes
  • Magic
    • Recharge Magic
    • Spell Points
    • Metamagic Variants
    • Summon Monster Variants
    • Incantations
    • Magic Items
  • Skills Variants
    • Alternative Skill Systems
    • Craft Points
  • Feats Variants
    • Traits
    • Flaws
    • Spelltouched Feats
    • Test-Based Prerequisites
  • Combat Variants
    • Facing and Hex Grids
    • Defence and Armor
    • Injury and Death
    • Rolls and Modifiers
  • Bloodlines