talismanic

from WordNet (r) 3.0 (2006)

talismanic
    adj 1: possessing or believed to possess magic power especially
           protective power; "a talismanic amulet"

from The Collaborative International Dictionary of English v.0.48

Talismanic \Tal`is*man"ic\, Talismanical \Tal`is*man"ic*al\, a.
   [Cf. F. talismanique.]
   Of or pertaining to a talisman; having the properties of a
   talisman, or preservative against evils by occult influence;
   magical.
   [1913 Webster]