Game or puzzleFC PM 96D

Le Castoristorik

Daisy is Thetis, a sea nymph of Greek myth, who washed her baby son Achilles in the river Styx in order to make him immortal. However, she held him by the heel which was not washed and thus vulnerable. During the Trojan War, the adult Achilles, a formidable fighter, was shot in the heel by an arrow and killed. Thus the expression "Achilles' heel".