“Theorealize Past Lull” was physically printed as:

If you control an “Artmage”, “DoomZ”, or “Elfnote” monster: You can Special Summon 1 “Medius the Pure” from your hand or Deck.

The Database has now been corrected to:

If you control an “Artmage”, “DoomZ”, or “Elfnote” card: You can Special Summon 1 “Medius the Pure” from your hand or Deck.

The card is to be played based on the database’s text, not the text on your physical card.

Source: The Database