with 4 thief classes u can make a weapon per day already, using steal on every single mob i get a minimum of 50 shards on each of mine gxes.
Also i got my thanos katar already, +7 it, testing on eggs, it deals better dmg than my +9 Blood tears[2xHF] FS11, as well as my +12 GBR lol. Will be making 2 or 3 more of this katar, 1 to put huntere fly, 1 for general dmg card, 1 for AK, and 1 for aunoe.
Actually with VIP+Normal gum i can get 50~57 pieces per run with genetic, i think with GX/SC can get maybe 70~75 pieces per run ( i need test that)