Dueler

Time: Free Action Target: A creature in Swinging Distance(1u) that does not have the Hidden status
Effect: Buff, Debuff

The target gains a Fleeting stack of "Dueled" with you as the source. All other creatures lose their stacks of "Dueled".

Gain the following Free Reaction:

Dueler's Opportunity

Time: Free Reaction Target: A creature with your stacks of Dueled
Trigger: When the Dueled creature targets a creature other than you with an Ability that deals Damage.
Effect: Debuff
The Dueled creature gains a stack of Vulnerable.

Upgrades:

Offensive.
- You can have up to two creatures with stacks of Dueled from you.
- When you Old Sneak Attack2, you can use this Ability as a Free Reaction afterward and then "Dueler's Opportunity" as a Free Reaction after that.