Some creature or creatures regularly (sunrise and sunset, summer and winter, lunar phases) or irregularly (solar and lunar eclipses, eschatological events) attack the luminaries or shade their light
Two brothers (companions) live In the epoch of the creation. One of them is smart and selfconfident, another is weak and makes mistakes. They are not enemies and demonstrate their qualities in two or more episodes
Inhabitans of the Middle World are (partly) destroyed (or will be destoyed) once by fire or draught, another time by a flood or the world is destroyed with a flood of fire or boiling water
Person transforms himself into an object of hunting or fishing, provokes hunters of fishermen to catch or shoot him and carries way the tools that they use (arrows, darts, harpoons, hooks, baits). Or he fishes by turning himself into a hook. Or he is caught but escapes turning back into a person
Person turns into a fish or game and exposes himself as a target. A lot of arrows, darts or harpoons stick in his body making him no harm, he carries them away