Jsk Archer

Archer's Focus
At 3rd level, you can expend 1 focus point to mark a creature that you can see (no action required). You creature remains marked by you until the start of your next turn. If the marked target moves at least 5 feet, you can use your reaction to make a ranged opportunity attack against it.

Unknown
At 6rd level,.

Unknown
At 10rd level,.

Unknown
At 14rd level,.