So what did you put as your idnum2itemresnametable, num2itemresnametable, and view ID in item_db2?
Here is an example of a custom card I made using the same sprites as Gravity.
1. Item_db2:
19058,Red_Eruma_Card,Red Eruma Card,6,20,,10,,,,,,,,136,,,,,{ bonus3 bAutoSpell,"TF_STEAL",5,20;},{},{}
2. Cardprefixnametable
19058#Lovely#
3. Cardpostfixnametable
19058#
4. Idnum2itemdesctable & num2itemdesctable
19058#
Add a 2% chance of using level 5 steal on a monster when attacking.
Class :^777777 Card^000000
Compound on :^777777 Accessory^000000
Weight :^777777 1^000000
#
5. Idnum2itemdisplaynametable & num2itemdisplaynametable
19058#Red_Eruma_Card#
6. Idnum2itemresnametable & num2itemresnametable
19058#À̸§¾ø´ÂÄ«µå#
7. num2cardillusnametable
19058#Æ÷¸µÄ«µå#
8. num2cardillusnametablex
19058#sorry#