After 5 plays, Echo has shot up to my top 3 favorite heroes to play. A 2/2/2 statline with 3 recovery and 9 hit points is baseline pretty strong if kind of squishy.
A flipping to hero ability to tutor a card is very strong and can bring you up to a starting handsize of 7. The hero ability to play aspect or basic cards anyone plays is bonkers. Grab 2 cost events under you and use Photographic Reflexes to play them many times. Eidetic Memory can help play them even more.
Cards that increase defense or Endurance can also help. Make sure to play The Rez so you can also benefit on some nice healing.
Echo's precon is one of the stronger I have played in a long time. A couple tries to beat Expert Klaw is awesome to me. She has built in defense, attack, and thwart.
Rating: S