Ancient Apparition + Viper

Why this works

Slowing a target with both Viper's attacks and Ancient Apparition's spells can feel like overkill. While the magic resistance reduction from Ice Vortex does amplify Viper's damage, the bigger issue is that neither hero brings a reliable stun. The slows are immense, but a target can often still use an escape item or ability to get away. You end up with a lane that has a lot of sustained damage and control, but no way to truly lock someone down for a guaranteed kill. This redundancy means you aren't covering as many bases as you'd want from a core and support pairing.

This lack of hard lockdown is felt all game. Early ganks often rely entirely on a third hero bringing a stun, otherwise the slowed enemy might simply teleport to safety. In teamfights, you have two heroes who are great at whittling people down, but you struggle to actually initiate or hold key targets in place. A well-timed Ice Blast from Ancient Apparition is always powerful against any lineup, but the core pairing of AA and Viper itself doesn't provide the setup to consistently win fights on its own. They need other heroes to fill that crucial gap.