Tinker + Zeus

Why this works

Seeing the enemy team finish a Pipe of Insight feels especially bad for this duo. Both Tinker and Zeus provide immense magical damage but offer very little else, creating a redundant pairing. An opponent can stack magic resistance to counter a huge portion of your team's total output with a single item. These heroes also compete for the same resources. Tinker needs to constantly be farming lanes with Boots of Travel to accelerate, which is the same space Zeus wants to occupy to get his own core items online. This conflict over map resources often slows down the timings for both of them.

The draft becomes very greedy and one-dimensional as a result. Your team is forced to find a frontline, physical damage, and hard crowd control from the other three positions. Since neither Tinker nor Zeus provides reliable setup, you're entirely dependent on your allies to initiate fights. If the game plan goes wrong, the enemy can simply activate Black King Bars and run at your backline. With both of your main damage dealers being so vulnerable and lacking tools to fight through spell immunity, it becomes very difficult to hold your ground.