Auriok Edgewright

• WWizards of the Coast2011-01-01
  Official Ruling
  If Auriok Edgewright has double strike as the combat damage step begins, there will be a second combat damage step. As that second combat damage step begins, if Auriok Edgewright no longer has double strike (perhaps because an artifact creature you controlled was destroyed), Auriok Edgewright will not assign combat damage a second time.

Rulings via Scryfall