πταίην

From LSJ

ἀσκὸς ὕστερον δεδάρθαι κἀπιτετρίφθαι γένος → I'd be willing to be flayed into a wineskin afterwards and to have my line wiped out

Source

French (Bailly abrégé)

opt. ao.2 de ἵπτημι.

Russian (Dvoretsky)

πταίην: opt. aor. 2 к ἵπτημι.