It was unfortunate that the Vindicator's power didn't work on the caster, but there was nothing he could do about it.
Besides, it wasn't like Erik could protect the Chimaeric Demons during the battle; at that point, they were alone. He could just try to stop the Cerulean Bird and try not to make it target his clones, but that was easier said than done.
The Cerulean bird was too powerful. It was too fast to see it move, too strong to try to resist, and had enough mana to destroy a nation with a single attack. Erik didn't even know if his defenses would be enough against the beast's talons, but it wasn't like he was willing to try.
Erik knew he couldn't afford a single moment of distraction—one blink could give the beast the opening it needed to strike him dead.
So Erik gave his orders.