1. Pick Puck.
2. Get Tower to hit your Hero.
3. While the Tower hit projectile is in air get charged by Baratharum.
4. Immediately click Phase Shift.
5. What? Just see yourself :p
Note: After becoming Invulnerable you can't pick up or use any items but you can get damage items so you can pwn during invulnerability :)
Credits to Kuarinofu & Zhuk.ru