Shadow Fiend

Stack Shadowraze debuffs on opponents' mid and secure lasthits at the same time if possible.

Build up Necromastery stacks through lasthitting and capitalize on the extra damage you have.

Try to stack camps close to mid after you push in the wave.

Kill the creepwave prior to rune spawns quickly and collect the runes. You need runes badly for mana.

Alert your teammates to stack for you as you can clear those early.

Focus on farming with mask of madness, especially at the Ancients and don't over rotate without runes.

Once you have Black King Bar, you can start to fight because Shadow Fiend is very susceptible to disables.

Keep sidelines pushed out when not much is happening.

Shadow Fiend has low starting damage and he relies on gathering souls through last hits. Try to contest last hits with him when his base damage is low.

Shadow Fiend does not have an escape mechanism, so look to gank him during the laning stage. If left unchallenged, he's one of the best farming heroes

Try not to run at Shadow Fiend in plain sight as you might get triple razed to death

Shadow Fiend's first big item is generally Black King Bar. Keep an eye out on the availability of Black King Bar in his inventory and try to gank him continuously before he gets the item.

In team-fights, look to play around Shadow Fiend's ultimate by either canceling it or moving away from him

Armor items are good against Shadow Fiend as his Presence of the Dark Lord is an armor reducing aura

Shadow Fiend should be a high priority target in team fights. If left unchecked, he can do tons of damage. At the same time, he's not that tanky and easy to bring down