Text (TS+errata): 1/1. ; All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment." [Oracle 2009/07/08]
It will trigger on itself coming into play. [Time Spiral FAQ 2006/08/30]
If there is no artifact or enchantment to target, then the triggered ability does nothing. If you have the only one in play, then you have to target your own. [D'Angelo 2008/05/25]
