If this card is attacked by a card such as Element Doom or Element Soldier, the effect will be negated. This seems to be because it is a flip effect, which means that during its effect resolution it stays on the field, even after it's been "destroyed". Strange, but worth noting.
Ran into an issue where a player summoned two BEWD with the Lord of D. and Summoning Flute combo. When Hane-Hane flipped, my only option to send back to hand was Lord of D., neither of the BEWD showed up as an option.