Abluvion: That which has been washed away.
Modi cries, scrabbling at Loki's knees as the beach tide comes in and knocks over his multi-layered sand castle.
"Oh for Norns' sake," Loki says grumpily, "that's just what happens sometimes, you know. Mama can't exactly stop the tides, I'm afraid that particular phenomenon is not under my jurisdiction. I advise you take it up with Ægir or something."
He rubs at his belly absentmindedly, the new baby turning at his touch, a silver fish slick and tumbling through him. Modi runs back towards wet sand, shovel in hand, and begins to furiously build another castle, the loss of the previous one already forgotten.
Loki hopes for his son's sake that he can maintain his naivete for as long as possible. He sighs heavily as he gets to his feet and watches the sun setting over the incoming waves, hoping that his children will not have to learn too soon that forever and eternity is just a state of mind, and promises can be broken as easily as they are made.