Severus had bought several more cauldrons, and was brewing as though his life depended on it.

In a way, it kind of did.

When there was nothing to be currently done with each cauldron besides waiting, he practiced curses such as sectumsempra, knowing that his magic needed to be at it's finest in the hopes of his mission being successful.

By the end of the weekend, he was ready. He rolled up his sleeve and pressed on the dark mark.