A derivable triggered glowing shield that rotates automatically around the avatar.
The trigger to put the shield up is *su and the trigger to bring the shield down is *sd
The wireframe template for the shield (below)
The texture that i used for this shield is below.
To get the glowing transparent effect, tick the "two sided" option,
tick the "use blending" option,
tick the "self illuminated" option,
tick the "fog override" option
and then make sure you select "additive" as the blending mode. What the additive mode does is that it makes the darker areas of the image more transparent and the brighter areas of the image more opaque.