Grimstroke + Invoker

Why this works

Landing Soulbind on two enemies gives Invoker a perfect setup. The most direct benefit is with Cold Snap, which will trigger on both bound targets for a long chain of stuns that makes it almost impossible for them to escape or retaliate. Beyond that, the slow and tether from Grimstroke's ultimate forces enemies to clump up. This lets Invoker easily land his area-of-effect spells like Chaos Meteor and Deafening Blast on multiple heroes without needing a complicated setup of his own. Grimstroke simply holds them in place for Invoker to do the rest.

The game plan revolves around finding pickoffs as soon as Grimstroke gets his ultimate. In larger teamfights, the goal is to bind two high-value targets, effectively removing them with control and then bursting them with follow-up damage. However, the advantage is situational. The whole plan depends on Grimstroke landing a good ultimate on the right heroes, and savvy opponents will try to play spread out to make that difficult. If the bind misses or hits a poor target, the synergy largely disappears, which keeps the pairing from being completely dominant.