Path of Exile free to play in about six hours.

[LennyLen]

That summoner is a real PITA too, fighting him in Merciless HC was probably one of the hardest fights I had since he decided to get smart and run across the map. He casts resurrect soo fast

That's where having a high crit-chance Ice Witch comes in handy. Raise Undead does not work on frozen shattered corpses.

And I just use corpse explosion on any others.