| Name | Prerequisites | Benefit |
|---|---|---|
| Obese | Small size, Dexterity 13 or lower, you may not be Lightweight. | |
| Obscure Lore | Bardic knowledge or lore class feature. | |
| Obtain Familiar | Knowledge (arcana) 4 ranks, arcane caster level 3rd. | |
| Ocular Spell | Knowledge (dungeoneering) 4 ranks, two or more eyes. | |
| Off-Hand Parry | Base attack bonus +3, Ambidexterity, Dex 13+, Two-Weapon Fighting, proficiency with weapon. | |
| Old Salt | Profession (sailor) 5 ranks. | |
| Open Minded | You immediately gain an extra 5 skill points. You spend these skill points as normal. If you spend them on a cross-class skills they count as 1/2 ranks. You cannot exceed the normal maximum ranks for your level in any skill. | |
| Opportunity Power | To use this feat, you must expend your psionic focus. When you make an attack of opportunity, you can use any power you know with a range of touch, if you have at least one hand free. Manifesting this power is an immediate action. You cannot use this feat with a touch power whose manifesting time is longer than 1 full-round action. Using this feat increases the power point cost of the power by 6. The power's total cost cannot exceed your manifester level. | |
| Otherworldly | Deep Imaskari (Underdark [Deep Imaskar]), elf (Evermeet, Sildeyuir), or spirit folk (Ashane). | |
| Overchannel | While manifesting a power, you can increase your effective manifester level by one, but in so doing you take 1d8 points of damage. At 8th level, you can choose to increase your effective manifester level by two, but you take 3d8 points of damage. At 15th level, you can increase your effective manifester level by three, but you take 5d8 points of damage. The effective increase in manifester level increases the number of power points you can expend on a single power manifestation, as well as increasing all manifester level-dependent effects, such as range, duration, and overcoming power resistance. | |
| Improved Overrun | Str 13, Power Attack. | When you attempt to overrun an opponent, the target may not choose to avoid you. You also gain a +4 bonus on your Strength check to knock down your opponent. |
| Oversized Two-Weapon Fighting | Str 13, Two-Weapon Fighting. | |
| Overwhelming Critical | Str 23, Cleave, Great Cleave, Improved Critical (chosen weapon), Power Attack, Weapon Focus (chosen weapon). | When using the weapon the character has selected, he or she deals an extra 1d6 points of bonus damage on a successful critical hit. If the weapon's critical multiplier is x3, add +2d6 points of bonus damage instead, and if the multiplier is x4, add +3d6 points of bonus damage instead. Creatures immune to critical hits can't be affected by this feat. |