- Mortal Strike and Bladestorm are usable in any stance. Switch to Berserker for a damage increase!
- Spell Reflect and Shield Bash are usable in Battle stance (but require a shield).
I need some more time to digest this information, but I thought that it may be valuable to share.
The table I generated is shown below. This version has the "boring" abilities removed (shouts, heroic strike, etc) that are usable in any stance. Click the image to see the full table.
(click it to see all Warrior abilities)
Are there any surprises there for you? Is it helpful to see all of this in one place?