Every positive monster luck token reduced the range of wound roll results considered critical. Normal, critical wound occur only on Lantern 10s. Unless survivors have positive luck modifiers, a critical wound against a monster with 1 or more luck tokens is impossible. Each negative monster luck token increases the attacker's critical wound range by 1. The rule of Lantern 10 always applies, so even if a monster's luck makes critically wounding impossible, a wound roll of a Lantern 10 will still cause a normal wound.