Plus don't underestimate Tiktak'to or whatever his name is. Re-enforments are great. Come in on the back table edge, move 10 inches and shoot at war machines on 5+ poisoned attacks. Also remember they have 2 wounds each and are -1 to shoot at em. I like to hide them in woods for another -1, and when I get tiktac'to, it'll be another -1. Kind of like Chamelions, with half the shots but lots more range and harrassing power.
At the moment I have 14 of these guys, I want 19 plus the hero. Imagine 20 terradons coming on the board, shooting up a war machine and shoot 20 poisoned javlins, then next turn dropping 20-60 S4 rocks on a unit.
I wont pull them out until I'm bringing them on the board. "Just a moment while I pull out a few terradons" then watch my opponents eyes get bigger as I keep setting more and more up. It'll be awsome.
I would like to point out, that while they can be usefull, I see them more as a fun unit to play, not a cornerstone unit like chamelions. This might change after I get more experence playing them, however as I'm gearing up for tournament play, this might be a while.