The spell Aop shouts in Ondoko adds this traditional curse:
Now, until end of the future! … well … literally, it’s “until close of [a] future Great Cycle [of thousands of years]”. Since only the Gods and the greatest powers can know the ultimate balance of life, Ondoko doesn’t give a banishment ultimatum for a period longer than this. After all, things are always changing; but Aop, in zer limited understanding of the spell, would definitely feel as if they were throwing some weighty magic around. And indeed, ze has.