Enigma

Enigma is a ranged hero who uses his skills to disable or overwhelm opponents. Usually played as an initiator, he can also be found in the jungle to raise a void army of eidolons using Demonic Conversion and easily earn quick gold. He usually blinks into the middle of a crowd of enemy heroes to disable them for a ridiculously long period of time with his Black Hole, which is usually enough for any decent team to dominate any resulting team fight. Due to the long cooldown on his ultimate, its difficulty to land, and his relative fragility, Enigma is recommended for intermediate to advanced players.

Eidolons
After six attacks, an Eidolon will split itself into two full-health Eidolons of its current level. These Eidolons will not split further, and will still expire 35 seconds after Demonic Conversion was cast.

Basic Strategy
Demonic Conversion has a cooldown of 25 seconds; Eidolons have a duration of 35 seconds. There is a very short window during which you can cast Demonic Conversion on one of your own Eidolons, which may be useful when attacking Roshan or other creeps with magic immunity.