If Royal Command is actived after Dark-Eyes Illusionist's effect resolves, Dark-Eyes Illusionist's effect is negated.
You can select a face-down monster.
When a face-down "Dark-Eyes Illusionist" is attacked and destroyed, its effect does not activate.
If "Royal Command" is actived after the effect of "Dark-Eyes Illusionist" resolves, the effect of "Dark-Eyes Illusionist" is negated.