Welcome to the forum
.First of all, be aware that it's an optional unit, so it requires your opponent's consent to be used. Second, I think that the rules for it are crazy and extremely unclear. If it were up to me, I'd just get rid of it from the rules completely, because I don't see that it adds much value to the game.
To answer your question, from what I can understand of its rules, you can destroy it. You wouldn't 'kill' it per se, just neutralise it or maybe even banish it. Either way, it has a saving throw, so if it fails it would be removed, just like any other unit, so far as I can tell.
It has no special deployment rules, so you'd have to deploy it normally, and hope for the best when rolling the dice. Definitely looks like a unit to avoid taking in your army list to me.