I

Impaired lines of fire

Improved mail armor

Incendiary cloud

Indirect fire engines

Informal morale checks

Initiative

base

during covering

effects of moving on

encumbrance’s effect on

in aerial combat

in dueling

movement’s effect on

of combat actions

of magical items

of movement

of psionics

of spells

of unarmed attacks

of weapons

weapon speed’s effect on

Injuries

Instant stand

Intelligence’s bonus proficiency slots

Intelligence of creatures

Investment

Invisibility

Iron will