Sniper + Warlock

Why this works

Pairing a long-range carry with big teamfight spells seems like an obvious win. Warlock can lock down a huge area with Chaotic Offering, giving Sniper a perfect window to attack from the outside. The problem is what happens after that initial stun. Warlock's only other control is a channeled Upheaval, which is easily broken when enemies dive the backline. He lacks the instant stuns or defensive spells needed to peel for a Sniper who gets jumped on. Fatal Bonds can help amplify Sniper's output, but it doesn't solve the core issue of keeping him safe and free to attack for a sustained period.

This leads to very predictable fights. The duo's success hinges almost entirely on Warlock landing a multi-hero Golem. If it connects, Sniper can often clean up. If it whiffs, or if the enemy team survives the initial impact, they can turn the fight by simply running at the vulnerable Sniper. Warlock has few tools to stop a dedicated dive once his ultimate is used. While a good ultimate can win a fight on its own, this pairing offers little else in the way of synergy, making their performance inconsistent against teams that know how to split their focus or weather the initial storm.