Perfect Mark of Darkness

soo ive gotten to the point were im at 50/50 quests, killed omega and ultima, unlocked odin (cant kill him solo) and ive been running around for the last 2 hours trying to figure out what to do with the Perfect Mark of Darkness. the hint says its a key that unlocks something but can find out where.. if anyone could help me that would be great

ps i heard rumors of zodic spear.. does this exist?

zodiac spear exist .... just try to search on barrel ..

but as it based on FF XII, you shouldn't open some barrel (actually i don't know where's barrel that not to open, but i found that spear)

so no one knows wat the perfect dark keys for?

Andrenden knows and a couple other testers do too. On another note, what version are you playing?

what i believe to be the most recent. 9.3

I suggest you get into the chocobo business

aka breed them?