Crystal Maiden + Weaver

Why this works

Pairing a fragile, immobile support with an elusive, self-sufficient core creates a lane that is defined by its aggression. Crystal Maiden can set up kills perfectly for Weaver. A well-timed Frostbite holds an enemy in place for The Swarm to attach and for Weaver to run them down with Shukuchi and Geminate Attack. The global mana regeneration is also a significant help for a hero who spams low-cooldown spells. The problem is that this partnership offers no defensive support. If enemies jump on Crystal Maiden, Weaver has no stun or peel to save her; his entire kit is designed to save himself, leaving his partner completely exposed.

This forces a specific playstyle. The lane has to play aggressively to get ahead, because if it falls behind or plays defensively, it falls apart. An enemy lane with strong kill potential can focus the Crystal Maiden repeatedly, and Weaver can only use Time Lapse on himself before running away. In mid-game teamfights, this disconnect continues. Weaver wants to skirmish on the edges of the fight, looking for openings, while Crystal Maiden needs her other teammates to form a frontline so she can safely cast her spells. They can succeed together, but they don't solve each other's inherent problems.