Prompt: the crucial element

Ezra sighed softly. There was just more thing that he needed and he would have finished his preparations. He just needed one more thing. Unfortunately, it was both the most important thing and the hardest to obtain.

The doorbell rang and he flew down the steps. Josiah barked excitedly, following him every step of the way. He pulled the door open and took the package from the mail carrier. “Thank you,” he said.

He shut the door and sat down. He smiled. Now, he was all ready for tomorrow. He had the last and most vital part of his costume.