Synergies is a end game raid expansion and balance mod for Torchlight 2 that won EDITORS CHOICE BEST OVERHAUL: 2013 in the MOTY AWARDS!
At 0:15 - Skull Barrage. Long range power, not the one that causes the most damage but you end up loving it.
At 0:24 - Spore Horde. Summons spores throwing poison to the enemies. Their damage increases with each point, and every 5 points are added two more spores.
At 0:33 - Zombie Horde. I think that needs no further explanation. Just be added that to reach 15 points end up being even more useful, because part of the damage caused becomes HP to the Necromancer.
At 0:40 - Spectral Dragon. A boss minion that besides causing great damage can buff the other invocations of the Necromancer.
At 0:53 - Bone Cage. A very useful trap. Its function is to immobilize the enemy and also causes huge amount of damage at high levels.
At 1:56 you can see another small and useful addition to the mod. Multiple inventory. Here's more drop so more space is needed.
At 2:10 you can see that even though the Necromancer uses magic skills is sometimes more convenient to use other weapons. In that respect, the Necro is very versatile. Similarly the choice of any particular build.
Pay attention at 4:27 to the appearance of a new kind of monster recently introduced in the latest versions of the Mod. This time I was lucky and it was a relatively easy, but I guarantee that most of the time I'm not so lucky.