Flying Dagger

The dagger is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the dagger must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.

While the dagger remains motionless and isn't flying, it is indistinguishable from a normal dagger.

Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) piercing damage.