Design Note - Where do we get an at-will or why
Scan for Opening?
One of the things in concept I miss from 4e were at-wills and one of the things I need to see out of a Warlord is that they feel like a Warlord every turn. So I figured that was a place to start.
One of the assertions tends to be In 5e you need to give up 2 extra attacks to be able to have the design space for a Warlord Scan for Opening just makes that giving up those attacks a dynamic thing. In the process by applying it to the Battlemaster it also gives back the non-all damage all the time at-will to our Battlemaster Fighter
More on the balance of it - 5e has been described as having a lot of its numbers being 4e divide by 2 but this is not entirely true (at least in damage and hit points). A translation from 4e land can help us find those varied at-wills, Now at heroic levels in 5e every combatant type has an at-will. Tadah It is an analog to the 4e Rangers Twin Strike although only scaling fully for the Fighter. In 4e at-wills for the most part scaled by a factor of 2x (I would argue the few which didn't were slip ups). A high level ranger got a double power twin strike at higher levels. Functionally the Fighter is the poster boy 4e ranger a multi-attack combatant. His twin strikes are split into 4 instead of being 2 double strength ones.
Basically if one uses scan for opening once around after level 5 and twice in end game you are now trading 2 extra attacks for 2 somewhat buffed at-wills (twin strike -with the rangers mark included kind of).
I’d probably simplify it. You can give up an attack to restore a superiority die.
I have thought about this and If you simplify it in that way you make it I think significantly more powerful and kind of undermine the concept that you are reading the current situation for instance if you can use it the next fight and similar things actually the way I conceived, it really was less useful for a maneuver like precision attack nor is it useful for a riposte because it is about scanning the situation now. (if you are making a trick shot you know is very unlikely to work it would allow you to do that it is a Robinhood enabler just maybe not the typical use case). Additionally since many maneuvers require an attack actually hit it generally via all eggs in one basket phenomena weakens the overall value as well. Exceptions are fairly few.
Scanning for Openings: When you make an attack action you may forgo one attack from it to enable your next actual attack this encounter to gain a Tactic Die which can be used during this or the next round to perform a maneuver as though you spent a superiority die. You may add your Int/Wis/Charisma in addition to the die if the maneuver calls for a die roll.
The adding of a Mental Attribute to the die is kind of a let's encourage the smart fighter.