Azgalor Pit Lord best item build for pushing

One of the many regents of Lord Archimonde who became stranded on the physical plane after the Legion fell in Kalimdor, the devil Azgalor's love of destruction allowed him to accept the Lich King's invitation to help lead the Scourge in conquest with few regrets. After all, this Pit Lord is happiest when he conjures fire to scour his opponents from above, roasting them slowly as the dead literally explode from beneath their feet. With such hateful power in the hands of a monster such as this, it's no wonder he inspires so much terror as he roams across the battlefield.

Firestorm

Calls down 6 waves of fire that damage enemy units in an area. Each wave deals initial damage and then burns enemies for 2 seconds.

Level 1 - 25 wave damage, 5 dps
Level 2 - 40 wave damage, 10 dps
Level 3 - 55 wave damage, 15 dps
Level 4 - 70 wave damage, 20 dps

Cooldown: 14
Manacost: 100 /110/120/130

Level 1: 100 mana, 14 sec cooldown.
Level 2: 110 mana, 14 sec cooldown.
Level 3: 120 mana, 14 sec cooldown.
Level 4: 130 mana, 14 sec cooldown.

Pit of Malice

A deadly pit is conjured at target location. Any unit that enters it becomes corrupted with malicious forces and are unable to move for some time.

Level 1 - 0.75 seconds
Level 2 - 1.5 seconds
Level 3 - 2.25 seconds
Level 4 - 3 seconds

Cooldown: 24
Manacost: 100/115/130/145

Level 1: 100 mana, 24 sec cooldown.
Level 2: 115 mana, 24 sec cooldown.
Level 3: 130 mana, 24 sec cooldown.
Level 4: 145 mana, 24 sec cooldown.

Expulsion

Ignites the rotten gases of corpses, detonating them to cause damage to any enemy within the explosion radius. Each explosion fuels another until there are no more corpses in the area. Does a ministun on damaged units.

Level 1 - 20 damage per corpse
Level 2 - 40 damage per corpse
Level 3 - 60 damage per corpse
Level 4 - 80 damage per corpse

Cooldown: 15
Manacost: 100/110/120/130

Level 1: 100 mana, 15 sec cooldown.
Level 2: 110 mana, 15 sec cooldown.
Level 3: 120 mana, 15 sec cooldown.
Level 4: 130 mana, 15 sec cooldown.

Dark Rift

Opens rifts that pass through the netherworld at his present position and a target unit simultaneously. Teleports your hero and nearby allied heroes through the rift.

Level 1 - 6 Second Casting Delay. Buildings only.
Level 2 - 5 Second Casting Delay. Units or Buildings.
Level 3 - 4 Second Casting Delay. Units or Buildings.

Cooldown: 180/160/140
Manacost: 75/150/225

Level 1: 75 mana, 180 sec cooldown.
Level 2: 150 mana, 160 sec cooldown.
Level 3: 225 mana, 140 sec cooldown.