Please help me understand -- why didn't Brannon banish Erawan and close the gate? See below
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He had the three keys, and he had the lock that had been forged by Mala. During the Nightfall chapter at the beginning of Empire of Storms we learn that his fire power is fading, he is fading, but the fire power was needed for forging the lock and Mala had already sacrificed herself for that. Aelin did use some of her power to close the gates, but most of it was in forging the lock, so I really don't understand why Brannon just hung around in possession of the lock and keys and didn't take care of banishing erewan and closing the gates himself. Please help me understand because the whole reason Aelin has to sacrifice herself is theoretically because Elena stole the lock from her father, Brannon, and used it to lock Erawan in the tomb at Morarth. But that doesn't explain why they didn't just use the keys and the lock to banish him and close the gate? Is it because he wanted to hold onto the keys so that he could use them, and if so why didn't he use them to defeat Erawan some other way? It seems like such a big major plot hole to me.
