Wrong, but this part is good (only it's not about abilities):
The riddle:i can command or order around the abilitys as i please.
Your closest friend I might be
throughout your journey's course
though you can't always find me
when ruled by other force
Through me you power may grow
your mind may expand too
and although you might not know
I know you better than you do
So you can talk to me at will
or order me around
you'll find me on the small hill
with three lines on the ground
Incorrect answers:
Eidolons
Experience points
Ability points
Weapons
Trance
Save feature
The battle system
The party's statistics
Items
The Crystal
Chocobo Tracks
Abilities
Magic
Magic stones
The "Attack" command
The Invincible
Choco
Chocobo's footprints
Moguo
Hints:
The answer is not a living creature.
The last verse is probably the most important key to separate the answer from other things that may fit the riddle.
"The small hill with three lines on the ground" is not a hill on the world map or in the field.
The answer is not part of the main storyline.
The riddle does not feature a "incredibly strange acronym" () or any acronym at all, for that matter.
There is a real world reference in the riddle.