οἰκτίστῳ θανάτῳ εἵμαρτο ἁλῶναι → it was fated that you would be taken by the most miserable death, it has been decreed that thou shouldst be cut off by a most piteous death
see ἄημι.
ἄητο: Επικ. αντί ἤητο, γʹ ενικ. Παθ. παρατ. του ἄημι.