1)Added a Trait that adds 50% to Health, however only his detail screen shows the updated stats. Any idea how to get this to also show on his card?
To what card do you refer? Is this a level up trait, a unit trait... it is rather difficult to discern what you would like to have happen without pictures
2)Playing with traits tree of the Defender. Trying to create a Taunt Spell, Is there a way to increase the likelihood that the ai will attack someone? Even a workaround clunky way?
The only way I can think of is to create a shield spell that will transfer the damage to another person. But I'm unsure of exactly how to capture the amount of damage an enemy unit just did to transfer that amount to another unit.
You could instead do clumsy and have the unit attack any other unit at random (blind rage) type thing. (Probably easiest to implement)
3) What file contains the yellow ring around selected skills? I'd like to change the color to something that stands out a bit more.
Are you talking about the trait skills from the unit selection screens or the trait skills from the unit level up screen. In either of these cases I don't think we have access to the color highlight through any of the files, it is a hardcoded thing. Unless you search through all the files and find it, but my search has left me empty.