Shining Sarcophagus (Quarter Century Secret Rare)

Cannot be destroyed by monster effects. You can only use each of the following effects of "Shining Sarcophagus" once per turn. During your Main Phase: You can add 1 card that mentions "Shining Sarcophagus" from your Deck to your hand, except "Shining Sarcophagus". If your opponent Special Summons a monster(s) from the GY (except during the Damage Step): You can discard 1 Spell, then target 1 of those monsters; send it to the GY.