This Sphinx creature isn't exactly Lyra Dawnbringer, but it has many similarities. It costs only 1 mana more, but it has the same power if you count both draw step and attack steps. Sure, Dream Trawler doesn't buff other creatures like Lyra, but it protects itself rather effectively.
This is a great choice for blue-white control decks during mirror matches or against highly aggressive opponents. In all other cases, it can stay in sideboard waiting for its turn.