In order to use the incantations you must obtain the following

• STATS Stones
• One item with available slot
• Drag the STATS stone to the item you want to enchant.

You will be able to find the stones that add +1 of stats

• STR Stone 1
• END Stone 1
• SPR Stone 1
• AGI Stone 1
• INT Stone 1

You will be able to find the stones that add +2 of stats

• STR Stone 2
• END Stone 2
• SPR Stone 2
• AGI Stone 2
• INT Stone 2