Fantasy Isle Paddies:
You can enchant Olf's T-shirt by using "Olf's T-shirt Enchant Scroll" or "Blessed Olf's T-shirt Enchant Scroll."
Purchase Olf's T-shirt Enchant Scroll - 7777 adena
It can be safely enchanted to +3, and it can be enchanted up to +10. Also, if you successfully enchant the T-shirt to +4 or more, the following additional abilities will be bestowed.
+4: CON +1.
+5: CON and MEN +1. Speed +7.
+6: STR, INT, CON, and MEN +1.      Speed +7.
+7: STR, INT, CON, and MEN +1.      Speed +7. Increases physical skill damage by 93.      Decreases skill MP consumption by 3%.      Active skill: Blessed escape ability.
+8: STR, INT, CON, MEN, WIT, and DEX +1.      Speed +7. Increases physical skill damage by 93.      Decreases skill MP consumption by 3%.      Increases critical damage by 41.3.      Increases magic critical rate by 2.      Active skill: Blessed escape ability.
+9: STR, INT, WIT, and DEX +1.      CON and MEN +2.      Speed +7. Increases physical skill damage by 93.      Decreases skill MP consumption by 3%.      Increases critical damage by 41.3.      Increases magic critical rate by 2.      Active skill: Blessed protection ability.
+10: WIT and DEX +1.      STR, INT, CON, and MEN +2.      Speed +7. Increases physical skill damage by 93.      Decreases skill MP consumption by 3%.      Increases critical damage by 41.3.      Increases magic critical rate by 2.      Active skill: Blessed protection ability.