This mod lets you click-cast greater blessings on a class in your raid. It also gives you a count of the number of Symbol of Kings you have in your inventory.

Commands:

/gb - brings up the greaterbuff menu
/gb lock - locks/unlocks the window in place
/gb unlock - unlocks the window.

/gb can be replaced by /greaterbuff. Also, you can bind a key to open the window without having to type any commands.