marks the spot.
a] What's a "trap token"? There's nothing in the box but chips and bags.
b] Once a stack is trapped, it stays trapped for the rest of the game? It can never be untrapped?
c] If a stack is trapped twice, you take 2 wounds when you buy from that stack?
a) Any convenient token you like. I keep a few pennies in the box for trap tokens.
b) Yes - trap tokens are never removed. Even if the stack is emptied (I believe).
c) Yes again. Pretty much all effects stack in this game, including the trap tokens.