I’m not sure if I like this. It’s surely an interesting mechaninc, but raiding is already one of the strongest mechanics in the game. You would only need to sneak in 5-10 of these in your enemy base and they would completely destroy the eco. I think this unit would be nice to have even if it needs 2 hits to kill a vill and has like 1.2 speed or whatever.
I miss a set of civ bonusses here that would make a “complete” civ.