{2}: This artifact deals 1 damage to any target. Destroy this artifact at the beginning of the next end step. Activate only if you've controlled this artifact continuously since the beginning of your most recent turn.
Because it does not have tapping as part of its activation cost, you can activate the ability many times in one turn, but it is destroyed at the end of any turn in which you use it.
It is only destroyed at end of turn if the ability resolved. If the ability is countered, it is not sacrificed.
You can choose different targets for each use.