I like Visage (Necrolic) the most. He is the only Int tanker in the game. He has a decent ultimate and very good skills that can disable the enemy and empowering himself and increase damage and hp regen and heal others if he is attacked.
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Items:
Mekansm (important for tanking)
Power Threads or Boots of Travel ( Depends on the situation )
Orchid (Damage, attack speed, mana and silence)
Necronomicon (Increases his units by 2 , mana burn and damage)
Helm of dominator(Increases his units bt 1 - 3)
Blood Stone (Vital for a Int tanker)
Then later Satanic (Insane lifesteal)
well , 11 units + a hero. A lot of dmg.And hp. Even can mana burn. And even can tank.