A Potamoi river god gives instructions on how to collect this stuff to a girl who almost drowned herself in him. Phrixus gives this stuff to a king as a gift of gratitude (15[1])for being (15[1])saved from a sacrifice plot devised by his step-mother Ino. To avoid the poisonous creatures central to her second task given by Aphrodite, Psyche collects this stuff from thorn bushes at night. This stuff was (*) hung on an oak tree in a grove sacred to Ares, where it was guarded by a dragon (-5[1])whose teeth (-5[1])could become soldiers. King Iolcus gives a man who arrived at his court with only one sandal a challenge involving this stuff. Orpheus, Heracles, and several other Greek heroes later join that challenge to obtain this stuff. For 10 points, name this material Jason fetched with the Argonauts. (10[2])■END■