TENET

When you cast this spell, an image of yourself appears, seemingly moving in reverse. This image can take any actions that you could normally take, including casting spells. However, when the image casts a spell or uses a feat or magic item that would normally have limited uses per day, it does not expend that use - instead, it gains another use of that feat or magic item. Once you and the image have the same number of spell slots remaining, the image disappears. You cannot cast any spells or use any feats or magic items until you complete a 10-minute ritual to end the spell.

When the ritual is complete, you reappear, but all feats, spells, expendables, etc. are the amount used by your image minus your current spell slots, skill feat slots, etc right before you completed the ritual to end the spell. Additionally, all damage dealt to the image during the spell's duration is transferred to you. This damage cannot be reduced or prevented in any way.

If you come into contact with the image at any point during the spell's duration or fall unconscious, the effects of completing the ritual are instantly done so as to prevent a paradox, and both you and the image disappear. The image takes 8d12 fire damage, and the spell ends.