SPOILER: EXIBIR
Agile Stand (MP2) -> Spring Step (PHB3)
Armored Endurance Training (MP2) -> Armor Finesse (HoFL)
Armored Swiftness Training (MP2) -> Armor Finesse (HoFL)
Artful Provocation (MP) -> Opportunity Knocks (MP2)
Astral Fire (PHB) -> Implement Focus (HoFL)
Burning Blizzard (PHB) -> Implement Focus (HoFL)
Dark Fury (PHB) -> Implement Focus (HoFL)
Raging Storm (PHB) -> Implement Focus (HoFL)
Retribution Seeker (D381) -> Implement Focus (HoFL)
Student of Moil (D371) -> Implement Focus (HoFL)
NOTE: These feats add to both weapon and implement powers, so in some cases they are still useful.
Barreling Charge (MP2) -> Obsolete due to rules change.
Bolstering Touch (D385) -> Lend Health (D388)
Chainmail Agility (MP) -> Heavy Armor Agility (HoFL, HoFK)
Iron Propulsion (PsiP) -> Heavy Armor Agility (HoFL, HoFK)
Dilettante's Mark (D379) -> Defending Dabbler (D385)
Fated Survival (D381) -> Resilient Focus (HoFL)
Iron Resolve of Zerthadlun (PHB3) -> Resilient Focus (HoFL)
Liberating Teleport (PHB3) -> Resilient Focus (HoFL)
Sturdy Mind (D389) -> Resilient Focus (HoFL)
Grit (MP) -> Disciple of Stone (HoFL, HoFK)
Group Flanking (MP) -> Vexing Flanker (PHB2)
Implement Expertise (Orb) (PHB2) -> Orb Expertise (HoFL)
Implement Expertise (Rod) (PHB2) -> Rod Expertise (HoFK)
Implement Expertise (Staff) (PHB2) -> Staff Expertise (HoFL, HoFK)
Implement Expertise (Wand) (PHB2) -> Wand Expertise (HoFL, HoFK)
Implement Expertise (Holy Symbol) (PHB2) -> Holy Symbol Expertise (HoS)
Implement Expertise (Ki Focus) is also made obsolete by Ki Focus Expertise (HoS)
Longsword Finesse (MP) -> Versatile Duelist (D381)
(Note: Technically, Longsword Finesse allows SA with an MBA, but has reduced SA damage
overall.)
Night's Sight (D371) -> Low-Light Adaptation (HoFK)
Twilight Training (MP2) -> Low-Light Adaptation (HoFK)
Paragon Defenses (PHB2) -> Improved Defenses (HoFL)
Robust Defenses (PHB2) -> Improved Defenses (HoFL)
Scion of the Gods (FRPG) -> Improved Defenses (HoFL)
Psionic Staff Focus (PsiP) -> Staff Expertise (HoFL)
Seize the Moment (PHB) -> Aggressive Advantage (HoFL, HoFK), Superior Reflexes (HoFL, HoFK)
Shifting Wind (D383) -> Disciple of the Wild (HoFL, HoFK)
Unstoppable Drive (D388) -> Disciple of the Wild (HoFL, HoFK)
Skill Swap (D383) -> Skill Power (PHB3)
Staggering Shot (MP) -> Hobbling Strike (MP2)
Venom Handler (D379) -> Poison Adaptation (D391)
Versatile Expertise (Staff) (PHB3) -> Staff Expertise (HoFL, HoFK)
Weapon Expertise (Axe) (PHB2) -> Axe Expertise (HoFL, HoFK)
Weapon Expertise (Bow) (PHB2) -> Bow Expertise (HoFL, HoFK)
Weapon Expertise (Crossbow) (PHB2) -> Crossbow Expertise (HoFL, HoFK)
Weapon Expertise (Hammer) (PHB2) -> Bludgeon Expertise (HoFL, HoFK)
Weapon Expertise (Heavy Blade) (PHB2) -> Heavy Blade Expertise (HoFL, HoFK)
Weapon Expertise (Light Blade) (PHB2) -> Light Blade Expertise (HoFL, HoFK)
Weapon Expertise (Mace) (PHB2) -> Bludgeon Expertise (HoFL, HoFK)
Weapon Expertise (Sling) (PHB2) -> Sling Expertise (HoFL, HoFK)
Weapon Expertise (Spear) (PHB2) -> Spear Expertise (HoFL, HoFK)
Weapon Expertise (Staff) (PHB2) -> Staff Expertise (HoFL, HoFK)
All other Weapon Expertise feats (PHB2) -> Master at Arms (HoFL, HoFK)