RD/CP01-JP014 仙人の神髄 Sennin no Shinzui (Essence of the Sage)
Normal Trap Card
Requirement: When an opponent’s monster declares an attack on your face-up monster (0 ATK).
Effect: Change the attacking monster to face-up Defense Position. If a monster is changed to face-up Defense Position by this effect, you can choose 1 Normal Monster (0 ATK) in your GY, and Special Summon it to your field face-up.

Source