First of all, this idea is totally mine and if Bertnard says it's not he's a f**king liar
Anyone who ever played a mage knows how tedius it is to buff after rest or before combat. "Buffer" is the solution.
A misc. item in inventory which, on use, allows you to cast a combo of spells of your choice. So in practice it looks like this : You join the server, cast the combo of spells (defensive spells) on the item and until reset the item remembers the combo and anytime you want, and if you have the spare spells, you can use it to repeat the combination you've placed upon it. A secondary use can be set on erasing the combo to possibly change it.
There is no advantage to be gain, such as faster casting or insta-cast. It's only to make a thousand - click buffing process a single click buff delight.