A Cruel champion hungers to be alone against exactly 1 enemy left standing.
Cruel champions are purchased with Little Legend Health instead of gold. They can be sold for gold, but not Health. You're welcome.
Dawnbringers rapidly heal some of their maximum Health the first time they drop below 50%. When this occurs, all allied Dawnbringers gain 10% bonus damage.
Nightbringers gain a shield for 8 seconds equal to a percent of their maximum Health the first time they drop below 50%. When this occurs, that Nightbringer gains bonus damage.