Invoker + Jakiro

Why this works

Layering all that area-of-effect control looks great on paper, but the spells often get in each other's way. An Invoker's Tornado lifts enemies, making them immune to Jakiro's Ice Path until they land. A well-timed Deafening Blast can push enemies right out of a Macropyre. Both heroes bring a ton of utility, but their setup tools are redundant or actively conflicting. Instead of a clean stun into big damage, you get a messy sequence where one hero's spell negates the other's. It requires a level of coordination that's hard to find, so the combo feels clunky and unreliable in practice.

The lane might feel okay, with Cold Snap helping Jakiro land his spells, but the problems show up in teamfights. Both Invoker and Jakiro want to dictate the positioning of a fight, but they can't do it at the same time. The Invoker wants to execute a specific spell sequence, while the Jakiro wants to lock down a zone. The result is that neither hero gets the perfect setup they're looking for. Instead of enabling each other, they often compete for control of the same space, leading to less effective fights than you'd expect from having two such powerful spellcasters on the same team.