Luna + Tinker

Why this works

Putting two high-damage cores together seems like a good plan, but these two heroes want to play completely different games. Luna thrives when grouped with her team. She wants to use Lunar Blessing to push down objectives and have allies nearby to set up a big Eclipse in a five-on-five fight. Tinker’s whole design is about avoiding those big teamfights. He excels at split-pushing lanes with Rearm, forcing the enemy to react to him while his team does something else. Luna wants to form a deathball, and Tinker’s job is to be somewhere else entirely.

This conflict means your team is constantly playing at a disadvantage. When Luna is ready to group and take an objective, Tinker is likely pushing a lane on the other side of the map. This invites the enemy team to force a four-versus-five fight they can easily win. If you try to force Tinker to group up and fight early, you're not using the hero for what he's good at, crippling his ability to apply global pressure. The lineup feels awkward because you can never fully commit to one strategy; you're either fighting shorthanded or have a core who isn't playing to his strengths.