The worst hero in Dota 2 has been named following the release of patch 7.37b

Venomancer has become the worst hero in Dota 2 following the release of patch 7.37b, losing over 6% winrate in matchmaking.
This is reflected in the data from DotaBuff.
Following the nerf to his ability Skeptic Shock, which allowed him to deal thousands of damage, Venomancer has topped the list of worst heroes in the latest gameplay update. After the release of patch 7.37b, the hero has significantly lost effectiveness in Dota 2 matchmaking.
Credit: DotaBuff
Close behind are two heroes from the previous meta, considered overpowered – Tinker and
Ember Spirit. These heroes were broken, and even esports players had requested nerfs.
Ember Spirit lost nearly 4% winrate after patch 7.37b, while
Tinker saw a 3% decrease in effectiveness.
Recall that Valve recently released Patch 7.37b for Dota 2, which changed the game's balance and transformed the meta.