Binding Dart (3.5e Equipment)
From D&D Wiki
Binding Dart: Binding Darts find a use among those who regularly fight enemies with teleportation abilities. A Binding Dart is like a masterwork Dart, but has one special effect: upon successfully striking a target, the Binding Dart affects the target with a dimensional anchor spell, bypassing spell resistance. The effect only triggers once per day.
Faint abjuration;CL 7th; Craft Magic Arms and Armor, dimensional anchor; Cost 2,250 gp + 90 XP; Market Price: 4,500 gp