Bane

Bane has improved night vision.

Bane is great at trading due to great baseline stats and Brain Sap to regain some health.

If an opponent is below 50%, you can Nightmare him and allow your core to come forward and finish the hero along with you.

Nightmare provides 1 second of invulnerability and thus you can save an ally in trouble or dodge a spell.

Bane is great for setting up kills. Nightmare and Fiend's Grip combined provide up to 13 seconds of disable.

You can unsleep or cast Glimmer Cape during Fiend's Grip without canceling it.

Avoid showing yourself at the start of the teamfight. Let opponents focus your allies so you can get your spells off easier.

Once you have Aghanims Scepter, you can cancel Fiends Grip channel with your hero without interrupting the ability.

Bane is a strong laner and good at trading hits and regaining health with Brain Sap. Bring extra consumables.

You can unsleep an ally affected by Bane's Nightmare by attacking that ally.

Look to cancel Bane's Fiend's Grip in fights as it is a long lasting disable.

Lotus Orb, Linken's Sphere and status resistance items are good at countering Bane's spells.