My ID is 257,571,609
Chizuru lead with sometimes Locke for stealing.
I gift everyday.
You're at capacity, but if you clear inactives out and want to add me (Firion/Kefka): 848,715,428
Also, LO-fucking-L at the mats for Rod of Gravity:
1 Massive Stone
44 Void Vessel = 220 Dark Cryst + 220 Farplane Soul
66 Litrock (FYI stealing with Zidane has gotten this every single time so far, even from the boss)
66 Earth's Core
80 Demon Heart (Drops from boss of ADV, so that's 1200 NRG)
Double all that if you want to craft two of them.
Guess I'll put Zidane (100% steal chance) up for the event and see if people use him to get litrocks.
Edit: Exvius Wiki claims that demon hearts drop from other things too, even some from INT.
Edit2: It's the footpads/cutpurses. They drop a heart, but are rare so it's not going to change the grind much. Getting 220 dark crysts is going to be a non-trivial task as well.