I really hate when people write a version of a story from another character's perspective and they do the exact same thing.
Maybe a flood, a water mutt, one of the tributes is actually a mutt and the capitol controls them.
My friend won't stop bugging me so, what about a hologram tribute and they can't be killed and they don't know that they are one(a hologram). The other tributes have to work together to figure out how to kill it.
And thanks, I feel so special :-)