{U}{U}, {T}: Target creature gains shroud until end of turn. Activate only during your upkeep. (It can't be the target of spells or abilities.)
The effect prevents spells or the effects of permanents from targeting the creature. Auras which confer an ability (such as Lance or Firebreathing) are not prevented.
Does not cause Auras on the creature to be removed when the ability is activated. An Aura on the battlefield is neither a spell nor an ability.