Okay. I'll give it another go. :)

Rush them with deception. Kill them before they get 6 Mana.

1. Round : Switch Duelist + Dark knives
2. Round : Cobra Scepter
3. Round : Jinx Duelist
4. Round : Assassins Aim
5. Round : He ded.

Also Rapture Dance and A Toast to Peace in case you reach 6 rounds as direct hard counters.