New-to-me Rub-a-Dub explains the significance of the frequently alluded-to cross in the stag’s antlers found in literature. He has the much better title of Harry’s Patronus, though.
The great stag stands, noble, impassive, staring directly down at Placidus, who falls face-down in worship, striking his fists on the floor of the cave, weeping. He knows the Crucified One. He hears a mighty voice, loud as the thunder, and is paralyzed, nearly fainting in fear. It says, “You have hunted Me long enough, Placidus. Now you have found Me.”
