UnitNinjaCost: 1ATK: 1 HP: 1
Stealth (Can sneak past patrollers if that opponent has no detector.)
When Smoker is ◎ by a spell or ability, return him to his owner's hand.
White Tech 0

Card-Specific Rulings
When Smoker is targeted by something, he immediately returns to hand, even before the rest of the spell or ability that targeted him resolves. — Sirlin
Stealth Rulings
"Sneaking past" means you can ignore patrollers when attacking and attack anything you want. You can also attack the patrollers if you prefer. — Sirlin
When something with stealth attacks an enemy unit or hero, that enemy unit or hero DOES deal its combat damage back as usual. — Sirlin
If an opponent has the Tower add-on and their tower has already used its once-per-turn detect on something, then you attack with something that has stealth, the Tower will not deal its damage to your stealth thing. It would if it's once-per-turn detect hadn't been used, but it can only damage things it can see. — Sirlin