Shadow Demon

Use Shadow Poison from fog to not fill stick charges for opponents.

Don't spam Shadow Poison unless you have mana and a chance to build up 5 stacks.

You can Disrupt an opponent's core and deny a creep or two.

Shadow Poison is great for stacking multiple camps.

Demonic Purge is great for kitting spell-immune heroes and to dispel important buffs including runes.

Don't show yourself at the start of the fight. Be quick at saving an ally with Disruption.

When not much is happening, push out the sidelines from the fog with Shadow Poison.

You can use Disruption on your cores to push out waves or to make deception plays.

Aghanim's Scepter is a must in late game for kiting opponents and for break effect.

Shadow Demon uses Shadow Poison frequently to harass. Magic Stick and Wand will be charged up.

If you have 3 stacks of Shadow Poison back up a bit and don't let yourself get hit by it again.

Shadow Demon's Demonic Purge applies continuous dispel and removes positive buffs from spells and items.

Focus Shadow Demon in the fights as he provides saves and control for his team.

Demonic Purge slows and damages through spell immunity. Be Careful not to waste Black King Bar on it.

Avoid buying Radiance and Assault Cuirass against Disruption as it will replicate these items.

Status resistance items, Linken's Sphere and a well timed Lotus Orb are great against Shadow Demon.

Once Shadow Demon gets Aghanim's Scepter he's able to break passive spells with Demonic Purge.