After the last update, when Ghost Horse was introduced to the server, Seal of Ghost Horse was added to a zen lottery, witch changed the drop chance of TOCA. The chances of getting TOCA still depends on luck but chances of getting it lowered to a minimum. The suggestion is to move seal of ghost horse to a different category of prizes, with lower drop chance or to make it a drop from some bosses, because getting Seal from lottery is pointless, you still need to farm all other materials to resurrect it, so with the same logic Condor flame or Garuda flame can be added to lottery or any other crafting material, witch will make lottery kinda pointless, because majority of the people are rolling in lottery to get the TOCA, witch is the only way to upgrade items safely, if the drop chance of it is low then the progression on the server becomes insanely slow, and majority of gameplay becomes an afk farming for zen, 3 minutes in lottery and back to farming zen, witch is not a healthy routine for server witch isn’t climbing above 200-250 online players.
So in a few words, my suggestion is to move seal of ghost horse to a drop from bosses or to a Jackpot+ category, so it won’t affect the chances of getting TOCA