Re: A pit.
Beast,
I think you're 100% correct. I re-read the rules for Usable As Attack, and imo, Pit really does describe an event similar to Flight, Usable as Attack, only downwards.
So...
Tunnelling, Ranged, Usable as Attack essentially will be the way I'm thinking of doing it. Maybe even AE - One Hex as an option.
Someone suggested the Body of Ground was, what's the DEF?
Thanks