suppose Winged Gundark + Night Beast vs Biggs
case1: imperials have initiative. Night Beast kills Biggs in his attack. Is Winged Gundark's attack affected by Bigg's ability, although Biggs died? (Biggs have yet to attack)
case 2: rebels have initiative. Night Beast kills Biggs. Is Winged Gundark's ability affected by Bigg's ability, although Biggs died?