What makes a good mentor?

[Avatre]

One who actually doesn't display the sword icon and can be helpful on their own terms.

This.

The only time I display it(since I believe it's automatic...I have my name hidden on my end so don't see it anyways) is during Mentor Roulette.
I will always offer help if people ask(and I can type it faster than others) when asked, but if nobody asks, then I won't say anything because you never know if they want to run it blind or not. Only exception, is multiple wipes to the same thing.