Text (LG+errata): 3/3. ; ~this~ can't be the target of Aura spells. ; {U}{B}{B}{R},{Tap}: Destroy target tapped or blocking creature. [Oracle 2005/08/01]
Is only immune to Enchant Creature enchantments. Enchant Permanent and other Auras which are somehow enabled to target him are not affected by his ability. [DeLaney 1997/01/28]
This card can be enchanted by moving enchantments onto it. The "can't be targeted" text is different from "can't be enchanted" in that it only applies to enchant creature spells when they are being played. [Delaney 2003/04/11]
Extended tournaments (see Rule 913) have always banned this card.
Note - This card was creature type "Legend" until Oracle 2004/10/01, when it became no type. Then with Oracle 2007/10/01 it became "Human Warrior". Then with Oracle 2008/01/01 it became "Human Archer".