As one who had thought they were "into" mysticism: It appears to my mind that the prevailing thought concerning Christian mystics; is that they regularly, or at one time, have conversed with, or received from God, some form of communication/revelation not contained in Scripture. Therefore: there's probably not one Orthodox saint who is not a mystic. I say this having read of Ss.John Maxiomovich of San Francisco, Xenia of St.Petersburg, Silouan of Mt.Athos, Raphael of Brooklyn, and the accounts of Fr.Arseny.
Orthodoxy does not glorify mystics or mysticism; then again, neither does she discount the reality of them either.
Other worldly is what Christians are to be by the very nature of the name; for, "...The preaching of the Cross is foolishness to them that are perishing. But to us, it is the wisdom of God." "Seek first the kingdom of God and His righteousness, and all these things will be added unto you." "But he who has My commandments and keeps them, he it is who loves me. I and the Father will come to him and make our abode with him, and disclose ourselves to him." Not once in all of His teachings about the marks of a true disciple did Jesus mention anything about physical signs of authenticity. But He did say "By this shall all men know that you are My disciples, if you have love to one another." Christianity is all about grace and mercy, not a freak show!
the sinful and unworthy servant