Shining Sarcophagus - Magnificent Monsters (MAMO)

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.