A magic item (such as a wand) that produces a particular spell effect. Any spellcaster whose class spell list includes a particular spell knows how to use a spell trigger item that duplicates it, regardless of whether the character knows (or could know) that spell at the time. The user must determine what the spell stored in the item is before trying to use it. To activate the item, the user must speak a word, but no gesture or spell finishing is required. Activating a spell trigger item is a standard action and does not provoke attacks of opportunity.