Dancing Blade
Prerequisite: Samurai archetype
When you take the Attack action on your turn and have advantage on an attack roll against one of the targets, you can forgo the advantage for that roll to attempt a disorientingly elaborate strike. If that attack hits, the creature takes additional damage equal to your Wisdom modifier and cannot take any reactions until the end of your turn.
Superiority. In addition, you can move up to your base movement speed after making this attack. This movement does not provoke opportunity attacks.
Debonair Death
Prerequisite: Samurai archetype
When you take damage that reduces you to 0 hit points and doesn't kill you outright, you can use your reaction to deal psychic damage equal to one quarter of your Fighter level (minimum 1) to the creature that reduced you to 0 hit points.
Superiority. This maneuver can be used without expending the use of your reaction, but still only once per round. In addition, you can make a single weapon attack against the creature that reduced you to 0 hit points.
Determined Strike
Prerequisite: Samurai archetype
When you take the Attack action on your turn and have advantage on an attack roll against one of the targets and miss, you can use your bonus action to make another attack roll against that same target with disadvantage.
Superiority. If this attack hits, you deal additional psychic damage equal to your Wisdom modifier.
Able Recovery
Prerequisite: Cavalier archetype
If you fall off your steed and descend no more than 10 feet, you can land on your feet if you're not incapacitated.
Superiority. You can use your reaction to immediately draw a weapon and make a weapon attack against a creature you can see after falling from your steed.
Call to Arms
Prerequisite: Cavalier archetype
While not mounted on your steed, you can whistle or otherwise call to your steed as a bonus action. You make an audible noise that if your steed can hear, it can immediately use it's reaction to move towards you at double it's speed.
Superiority. If your steed reaches you, you can immediately mount it (no action required). If it has movement remaining from it's reaction, it can continue to move in a direction of your choice until it has no movement remaining.
Combat Vet
Prerequisite: Cavalier archetype
If your steed is at zero hit points and was reduced to zero hit points within the last minute, you can administer first aid and attempt to stabilize it as an action. A successful DC 10 Wisdom (Medicine) check restores your steed to 1 hit point instead of 0 but the creature is prone.
Superiority. You automatically succeed your first aid attempt.