Teamfight Heroes

Big teamfight heroes: 

Damage:  Earthshaker, Leshrac, Sand King, Outworld Destroyer, Anti-Mage, Veno, Sfiend, QoP, Lich, Keeper, Crystal Maiden, Gyro, Shadow Shaman, Jakiro, Zeus, Tinker, Warlock, Witch Doctor, Death Prophet, Disruptor

Disable:  Magnus, Enigma, Sven, Centaur, Slardar, Faceless, Silencer, AA?, Puck, Jakiro, Brewmaster, Kunkka, Beastmaster, Tide, Treant

Positioning:  Dark Seer, Clockwerk

Buff/Debuff:  Dazzle, Venge, Necro, Shadow Demon, Invoker, Pugna, Undying, Chen, Drow, Beastmaster, Luna, Troll, KotL

"Broken" (OP) Ultimates:
Troll (+Spectre!)

Ancient Apparition

Warlock

Silencer

Death Prophet

Lich (less so in higher-skill games)

Zeus

Luna

Venomancer

Faceless Void

Naga Siren

Gyrocopter