Cham

A rune that, when it drops, makes you think: "Why couldn't I have been just a little less lucky and got a

Jah to drop instead?"

Its low value, relative to other high runes, means it is at least a relatively attainable source for the very useful Cannot be Frozen buff. Physical damage characters can stick a

Cham into a socketed

Guillaume's Face or

Crown of Ages, for example, to avoid using

Raven Frost and thereby free up a ring slot.