I'm running a campaign, and at the climax the group is going to come face-to-face with a giant monster. specifically the Terror From Beyond ( http://starwars.wikia.com/wiki/Lotek'k ). This thing is a massive monster, and I want its stats to reflect that.
I'm not entirely sure how to stat it out, though. I was considering making it planetary scale (since in the game it attacks with tentacles first from a distance), but I think that might make it too overpowered.
Has anyone tried to make stats for a creature like this? I'd want to dissuade my players from killing it directly, but I also want to have the option to fight it if they so choose. Of course, if they choose they're going to learn in about a round they made the wrong choice, but still...