I come to drink

Possibly evoking the ancient Irish saga of 'The Wooing of Etian'. In it, the god Mider had fallen in love with a mortal named Etian, but the goddess Fuamnach struck the young woman with a rowan wand and transformed her into a puddle. As the water dried, it became a worm, which was then changed into a scarlet fly, whose eyes shone like precious stones in the dark, and its color and fragrance would sate hunger and quench thirst in any man