How does a seer experience his own death?

If successful, this meeting with the Guardian (see: Guardian of the Tresholdresults in the student’s next physical death being an entirely different event from the death as he knew it formerly. He experiences death consciously by laying aside the physical body as one discards a garment that is worn out or perhaps rendered useless through a sudden rent. Thus his physical death is of special importance only for those living with him, whose perception is still restricted to the world of the senses. For them the student dies; but for himself nothing of importance is changed in his whole environment. The entire supersensible world stood open to him before his death, and it is this same world that now confronts him after death.

Source: Rudolf Steiner – GA 10 – Knowledge of the Higher Worlds and Its Attainment: Chapter IX: The Guardian of the Threshold

Translated by George Metaxa / Revisions by Henry B. Monges