Necrophos

Rotund'jere the Necrolyte is an item-dependent caster Hero who can take on multiple roles depending on his teams needs. His skills are most effective in team fights where he can damage enemies and heal allies simultaneously, while picking off key enemy heroes with his ultimate. Necrolyte is most dangerous when his enemy is severely injured, instantly killing them with his ultimate while recovering his Mana after killing his foe. Whenever Necrolyte walks, death follows, slowly draining the vitality of his enemies and killing them, all while enjoying the pleasure of pain and gaining life.

Tips

 * Max Heartstopper Aura before anything else; as it allows for harassment of enemy heroes by means of simply standing near them, as you would in early-game laning.
 * Only use Reaper's Scythe for a sure kill, as the idea is that it will return its mana expenditure.
 * Necrolyte can very easily be built as a tank and in most circumstances should be; gear for strength (he does not need int owing to his two bread-and-butter offensive abilities being percentage based) and consider a vanguard instead of or in addition to your mekansm. He should be built as a tank because he needs to stay alive in violent encounters to heal his allies, and also because the longer he is alive for, the more damage his aura will do.
 * Necrolyte is an extremely effective counter for invisible heroes as if they stall before they attack his aura will whittle down their hp, and his Reaper's Scythe will prevent them escaping via invisibility before they die. He is also very good against heroes with abilities that deplete their own hp, such as Pudge and Huskar, but in order to withstand their assault he must be built as a tank.

Trivia

 * Necrolyte's Alternate/Fun name was "A Phoe Gyi" means "an old man" in myanmar language