|“||'"SAYEST THOU: PLAGUEY, PLAGUEY, PLAGUEY." - Arrow of Dodona'||”|
The Arrow of Dodona was an arrow that Apollo found in the Grove of Dodona. The arrow has an oak shaft and green fletching. The Arrow speaks to Apollo in an Elizabethan accent and gives answers to Apollo. The answers are not prophetic, the answers vary from how to make a plague arrow to giving driving directions to the Cave of Trophonius.
The arrow is found in the Grove of Dodona by Apollo. He then takes it out and learns of its speech when the Colossus Neronis attacks the camp. The arrow re-teaches Apollo how to make a plague arrow, but the enchantment works too well and all the campers get hay fever.
While talking with Emmie and Josephine at the Waystation, Calypso suggests Apollo shows them the Arrow of Dodona but he refuses. He pulls it out at West Maryland Street for advice on how to rescue Britomartis' Gryphons, Heloise and Abelard. It advises them to go to the Indianapolis Zoo. The arrow later to Apollo and Meg McCaffrey how to drive to the Bluespring Caverns.
Apollo asks the arrow for help when they are being attacked by Strix. It tells him to use pig entrails, or abrutus is pig entrails are not available. While fighting Helios it tells Apollo to have Piper shoot a blow dart at Medea.
While fighting Caligula’s guards, Apollo uses it to shoot a cyclops in the eye; much it its annoyance and disgust. The arrow tries to stop Apollo from stabbing himself with it to no avail, however it moves away from his heart when he does stab himself. Apollo calls upon the arrow for help when going through the oracle’s word puzzles.