Your attacks with stealth that are attacking a marked hero get +1{p} and "When this hits, this gets go again."
At the beginning of your end phase, if an opponent is marked, you become a random Agent of Chaos. (Your {g} doesn't change.)
Ambush (While this is in your arsenal, you may defend with it.)
When this defends, create a Crouching Tiger in your banished zone. You may play it during your next turn.