But the number of injuries and venom from various magical creatures pumping through his bloodstream had immobilized Harry almost completely. When Harry had broken into Gringotts the second time, six months after the Massacre he had actually failed. He’d come for Bellatrix, and while she managed to escape, Harry had been captured by what remained of the goblins in charge of the wizarding bank. He had fully expected the goblins to hand him over to Tom, but instead they gave him the key to the Potter vault. Not the one he had used since his first year at Hogwarts, but the real vault. The one that was supposed to open up to him the moment he reached the age of majority. It was in the Potter vault that Harry found the Serpent Slayer, a massive hunk of goblin silver that had once belonged to a medieval Potter that was infamous for wielding the sword. But not only that, but Harry was offered the chance to become physically better than any living wizard through the use of goblin magic.