[MaxWilson]

Immortality is thematic for the "death match" champion, and is still valuable in the late game. It's not readily abusable because it's restricted to your own dominion (and also makes you lose all your items), but it does confer the ability to heal afflictions and that's useful everywhere.

I do wonder: in the game right now, if the "arena" site is somewhere within your dominion and you send an immortal unit to the fight, does he come back to life when killed?

-Max