Surprise Attack Rogue Feature
When you hit an enemy that you have Combat Advantage against with a basic attack or power with the martial keyword, you can apply one of the following in addition to other effects:
* You slide the target up to 2 squares.
* The target falls prone.
* The target is slowed (save ends).
* Make a basic attack as a minor action against one other enemy whom you have not hit on the same turn. If you hit, you inflict only DEX mod damage, but, if you have combat advantage, may apply a Surprise Attack effect.
Secret Thrust Rogue Feature
When you use a daily or encounter attack power with the martial keyword, you can apply one of the following extra benefits to conditions imposed on enemy(ies) targeted by the attack against whom you had combat advantage when you resolved the attack:
* If the attack imposes a condition until the end of your next turn, it gains an after-effect: the same condition (save ends)
* If the attack imposes (or the target is already under) one of the following conditions, you can impose the next condition in the list, instead: slowed -> immobilized -> restrained
* If the attack imposes (or the target is already under) one of the following conditions, you can impose the next condition in the list, instead: unable to take OA -> dazed -> stunned
Special: You cannot gain the same extra benefit from using a Secret Thrust again until after the current encounter ends.
That's controllers for ya. Well, trying to squeeze the whole role support into features, anyway.
I started out with the Hunters clever shot, btw, that's the first three. Then the last one was doctorbadwolf's request. The other three are just different spins on the stuff I gave the Battlemaster, as are some of the Tricks.
Perhaps
Warlord (Hector Build)
Powers that move enemies or induce friendly fire gain bonus damage
- Brutal Manipulator psychic damage based on cha/2 or int/2
- Rough Manipulator physical damage based on str/2
Fearful Presence
- martial powers having the key word fear have saving throws at -2
- powers that move enemies increase slide/push/pull distances by 1 square
Have to make sure there are enough powers that qualify... of course
I started out with the Hunters clever shot, btw, that's the first three.
The executioner idea sounds workable.... Or, maybe the executioner assassin would be a better mechanical fit, replacing poisons with bombs, idk. 4e is a tough case for classes with limited consumable item based powers. ).
The executioner idea sounds workable...
...as workable as the executioner, anyway.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.