Just had a hilarious game as Bloodseeker, I managed to build a Mjolnir, Deadalus, and then a Rapier!
Immediately lost it in the next teamfight in the middle of the enemy base, but that's fine because a seige creep was parked on top of it and the other team didn't notice it
So our Kunkka went invis and wandered in and picked it up.
Kunkka then died in their base and dropped it again, but I had respawned by then so I managed to retrieve it a second time, then spent the last few minutes of the game too scared to actually run in and use it XD
1700 dmg crits were awesome though with Bloodseeker's attack speed. Just not going to build rapier on such a squishy hero again.