Name: ARMOR SPECIALIZATION
You are so familiar with your armor, you know how to use it to full advantage.
PreReq: Proficiency with selected armor, Base Attack Bonus +12
Description: Choose one type of medium or heavy armor. When wearing masterwork (or magic) armor of that type, you gain damage reduction 2.
Source: PHII
Category: Combat (Defensive)

Name: BLIND-FIGHT
You can fight blind much better than normal.
PreReq: None
Description: In melee, only 25% to miss invisible (or other concealed) enemies (normally 50% miss). An invisible attacker in melee gets no advantages to hit you (normally you lose Dex and they gain +2 hit).
Source: PH
Category: Combat (Melee, Defensive)

Name: BOUNDING ASSAULT
You can move and attack with superior speed and power.
PreReq: Dex 13, Dodge, Mobility, Spring Attack, Base Attack Bonus +12
Description: When using Spring Attack, designate two foes rather than one. Your movement does not provoke an attack of opportunity from either foe. When using the attack action with a Spring Attack, you may make a second attack at -5. Both attacks may be against one of the designated foes or split between them.
Source: PHII
Category: Combat (Defensive, Melee)

Name: COLD ENDURANCE
You exist with ease in low-temperature environments.
PreReq: Base Fortitude save +2
Description: Ignore cold dangers in conditions down to 0F and lessen the effects in colder conditions. +2 bonus on saving throws vs cold effects (including spells).
Source: Frost
Category: Combat (Defensive), Miscellaneous

Name: COLD ENDURANCE, IMPROVED
You are resistant to cold.
PreReq: Base Fortitude save +6, Cold Endurance
Description: You gain resistance to cold 5. This feat may be taken multiple times and its effects stack up to a maximum resistance 15.
Source: Frost
Category: Combat (Defensive), Miscellaneous

Name: COMBAT CASTING
You are good at casting spells when enemies are attacking you.
PreReq: None
Description: +4 bonus on Concentration checks made to cast a spell while on the defensive (next to an enemy) or when grappled.
Source: PH
Category: Magic (Miscellaneous), Skill, Combat (Defensive)

Name: COMBAT EXPERTISE
You are good at shifting to defense when you need to.
PreReq: Int 13
Description: Take a penalty of as much as -5 on your attack rolls and add that amount to your armor class for one round.
Source: PH
Category: Combat (Defensive)

Name: COMBAT EXPERTISE, IMPROVED
You have mastered the art of defense in combat.
PreReq: Int 13, Combat Expertise, Attack Bonus +6
Description: When you use the Combat Expertise feat to improve your AC, you may subtract any number from your attack to use for your AC (instead of the 5 point limit) that does not exceed your Base Attack Bonus.
Source: CompWar
Category: Combat (Defensive)

Name: CUNNING EVASION
You use the chaos and flash of area attack detonations to duck out of sight.
PreReq: Hide 9 ranks, evasion
Description: If you completely avoid damage from an area attack due to your evasion, you can immediately make a combined 5-foot step and Hide check. There must be suitable cover for a Hide check.
Source: PHII
Category: Combat (Defensive)

Name: DAMPEN SPELL
You know how to channel energy into a foe's spells to weaken them.
PreReq: Improved Counterspell
Description: If you recognize the spell an opponent casts, you may immediately expend a spell to dampen its effects. Subtract the spell level of the expended spell from the save DC of your opponent's spell.
Source: PHII
Category: Combat (Defensive), Magic (Spell)

Name: DIEHARD
You take a licking and keep on ticking.
PreReq: Endurance
Description: At negative hitpoints may choose to be disabled (i.e. still perform actions) instead of dying.
Source: PH3.5
Category: Combat (Defensive)

Name: DIVE FOR COVER
You can dive for cover or drop to the ground quickly to avoid area effects.
PreReq: Base Reflex save +4
Description: If you fail a Reflex saving throw, you can immediately attempt the saving throw again using the second result. You immediately become prone.
Source: CompAdv
Category: Combat (Defensive)

Name: DODGE
You are able to dodge enemy blows.
PreReq: Dex 13
Description: Designate an opponent and receive a +1 to armor class against attacks from that opponent.
Source: PH
Category: Combat (Defensive)

Name: ELUSIVE TARGET
Trying to land a blow against you can be a maddening experience.
PreReq: Dodge, Mobility, Attack Bonus +6
Description: (1) Negate Power Attack: If the foe you designate for a Dodge, uses a Power Attack against you, it does not gain the bonus to damage. (2) Diverting Defense: You must be flanked and one of the flankers must be the foe designated with your Dodge. The first attack of the foe automatically misses you and may strike the other flanking foe instead. (3) Cause Overreach: If you provoke an attack of opportunity by moving out of a threatened square, and the opponent misses you, make a free trip attempt.
Source: CompWar
Category: Combat (Defensive, Melee (Special Attacks))

Name: EYES IN THE BACK OF YOUR HEAD
Your superior battle sense helps minimize the threat of flanking attacks.
PreReq: Wis 13, Attack Bonus +1
Description: When flanked, attackers do not get the usual +2 bonus to hit.
Source: CompWar
Category: Combat (Defensive)

Name: FORCE OF PERSONALITY
Your sense of self and purpose are so strong that they bolster your willpower.
PreReq: Cha 13
Description: You add your Charisma bonus (instead of your Wisdom bonus) to Will saves.
Source: CompAdv
Category: Combat (Defensive), Miscellaneous

Name: GREAT FORTITUDE
You have great fortitude.
PreReq: None
Description: +2 bonus on all Fortitude saves.
Source: PH
Category: Combat (Defensive), Miscellaneous

Name: HEAT ENDURANCE
You exist with ease in high-temperature environments.
PreReq: Base Fortitude save +2
Description: Ignore heat dangers in conditions up to 120F and lessen the effects in hotter conditions. +2 bonus on saving throws vs fire effects (including spells).
Source: Sand
Category: Combat (Defensive), Miscellaneous

Name: HEAT ENDURANCE, IMPROVED
You are resistant to heat.
PreReq: Base Fortitude save +6, Heat Endurance
Description: You gain resistance to fire 5. This feat may be taken multiple times and its effects stack up to a maximum resistance 15.
Source: Sand
Category: Combat (Defensive), Miscellaneous

Name: HOLD THE LINE
You are trained in techniques against charging opponents.
PreReq: Combat Reflexes, Attack Bonus +2
Description: If an opponent charges you, you may make an attack of opportunity first.
Source: CompWar
Category: Combat (Defensive, Melee)

Name: IMPROVED COUNTERSPELL
You are good at counterspelling.
PreReq: None
Description: When counterspelling, you may use a spell of the same school that is one or more spell levels higher than the target spell. Normally you may only counterspell with the exact same spell (or a spell specifically designated in the spell description as countering that spell).
Source: PH3.5
Category: Combat (Defensive), Magic (Spell)

Name: INDOMITABLE SOUL
Your physical toughness translates into greater mental resiliency.
PreReq: Endurance, Iron Will
Description: When making a Will save against mind-affecting or fear, roll twice and use the higher roll.
Source: PHII
Category: Combat (Defensive), Miscellaneous

Name: INSIGHTFUL REFLEXES
Your keen intellect allows you an uncanny knack for evading dangerous effects.
PreReq: Int 13
Description: You add your Intelligence bonus (instead of your Dexterity bonus) to Reflex saves.
Source: CompAdv
Category: Combat (Defensive), Miscellaneous

Name: IRON WILL
You have an iron will.
PreReq: None
Description: +2 bonus on all Will saves.
Source: PH
Category: Combat (Defensive), Miscellaneous

Name: KARMIC STRIKE
You have learned to strike the instant an opponent strikes you.
PreReq: Dex 13, Int 13, Combat Expertise, Dodge
Description: On your turn, choose to take a -4 penalty to AC until your next turn. If an opponent hits you while your penalty is active, you may make an immediate attack of opportunity against the opponent.
Source: CompWar
Category: Combat (Defensive, Melee)

Name: LIGHTNING REFLEXES
You have lightning reflexes.
PreReq: None
Description: +2 bonus on all Reflex saves.
Source: PH
Category: Combat (Defensive), Miscellaneous

Name: MAGE SLAYER
You have studied the ways and weaknesses of spell casters and can time your attacks and defenses against them.
PreReq: Spellcraft 2 ranks, base attack bonus +3
Description: You gain a +1 bonus on Will saves. Spell casters you threaten may not cast defensively.
Source: CompArc
Category: Combat (Defensive, General)

Name: MOBILITY
You are able to avoid being hit while moving.
PreReq: Dex 13, Dodge
Description: +4 bonus to AC against attacks of opportunity caused by moving out of or within a threatened area.
Source: PH
Category: Combat (Defensive)

Name: MOUNTED COMBAT
You are good at fighting from the back of a mount.
PreReq: Ride 1 Rank
Description: Once per round, when your mount is hit in combat, you may attempt a Ride check (DC is the opponent's attack roll) to negate the hit.
Source: PH
Category: Combat (Defensive, Mounted)

Name: MOUNTED MOBILITY
You are skilled at dodging past opponents while mounted.
PreReq: Ride 4 Ranks, Mounted Combat
Description: If you are mounted, you and your mount get +4 AC against attacks of opportunity caused by you moving.
Source: Hero
Category: Combat (Defensive, Mounted)

Name: PHALANX FIGHTING
You are trained in fighting in close formation.
PreReq: Proficient with heavy shield, Attack Bonus +1
Description: If using a heavy shield and a light weapon, +1AC. If within 5 feet of an ally who is also using a heavy shield, light weapon, and this feat, gain an additional +2AC (for a total of +3AC) and +1 Reflex Save.
Source: CompWar
Category: Combat (Defensive)

Name: RAPID BLITZ
You combine speed and ability to move and attack with unmatched skill.
PreReq: Dex 13, Bounding Assault, Dodge, Mobility, Spring Attack, Base Attack Bonus +18
Description: When using Spring Attack, designate three foes rather than one. Your movement does not provoke an attack of opportunity from any of the three foes. When using the attack action with a Spring Attack, you may make a third attack at -10. All attacks may be against one of the designated foes or split between them.
Source: PHII
Category: Combat (Defensive, Melee)

Name: ROBILAR'S GAMBIT
You expose yourself to place yourself in an advantageous attack position.
PreReq: Combat Reflexes, Base Attack Bonus +12
Description: At the start of your action, declare the Gambit. Anyone who strikes at you gains a +4 hit and +4 damage. Every attempted strike against you provokes an attack of opportunity from you after your foe's attack.
Source: PHII
Category: Combat (Defensive, Melee)

Name: RUN
You can run quickly.
PreReq: None
Description: When running you move five times your normal speed (if lightly burdened) or four times your speed (if medium or heavy burdened). +4 bonus to Jump when running. Retain Dex bonus to AC when running.
Source: PH
Category: Miscellaneous, Skill, Combat (Defensive)

Name: SPRING ATTACK
You can move in to attack without being vulnerable.
PreReq: Dex 13, Dodge, Mobility, base attack bonus +4
Description: When using the attack action with a melee weapon, you may move both before and after the attack provided the total distance moved is not greater than your speed. You do not provoke attack of opportunities from the opponent attacked.
Source: PH
Category: Combat (Defensive)

Name: STEADFAST DETERMINATION
Your physical durability sees you through any difficulty.
PreReq: Endurance
Description: You add your Constitution bonus (instead of your Wisdom bonus) to Will saves. You do not automatically fail Fortitude saves on a natural 1.
Source: PHII
Category: Combat (Defensive), Miscellaneous

Name: TOUGHNESS
You are extra tough.
PreReq: None
Description: Gain 4 hit points.
Source: PH + Tim mod
Category: Combat (Defensive)

Name: TOUGHNESS, IMPROVED
You are significantly tougher than normal.
PreReq: Toughness, Base Fortitude +2
Description: Add 1 HP per level.
Source: CompWar
Category: Combat (Defensive)