Enigma

Enigma is a ranged intelligence hero who uses her abilities to cripple her enemies, supported by a seemingly inexhaustible army of creeps. Her fearsome abilities can bind entire teams under her might. Enigma is also a formidable jungler and pusher owing to her ability to create creeps.

The deliverance of her ultimate, Black Hole, engulfs an area around her with dark energies and disables enemies caught within it, making her an extremely powerful yet conditional initiator and disabler. Her Midnight Pulse consumes sections of enemies' life in a region over time and his Malefice stuns targets. His trademark ability is Demonic Conversion, which splits a creep into three eidolons under his control. If they can land enough attacks on an enemy unit before their expiration, they multiply and are healed to full health.

Tips

 * Keeping Eidolons around you is a very good idea when there is a Pudge or Mirana on the enemy team, as it makes you very difficult to be hooked or arrowed, which is important considering that Enigma is very easy prey for kills in the early game.
 * When jungling, max Demonic Conversion to beefen up your Eidolons and increase their damage. Also, micro your Eidolons to make sure none of the initial three Eidolons die to jungle creeps so that all of them can multiply. This will increase jungling speed significantly. Don't be afraid to tank for your Eidolons either when clearing the big camps.
 * In sufficient number, Eidolons can be used effectively in encounters, as en masse their collective attack does significant damage. If you die in an encounter and you have Eidolons still alive, use them to boost your team's damage a little.
 * Be careful of letting enemy heroes kill your Eidonlons in the early game, because they give a significant gold bounty.
 * Enigma's presence in encounters is greatly diminished while Black Hole is on cooldown, but he can make himself useful by saving Malefice for a crucial moment and also sneaking around to use Midnight Pulse within an area the enemies may try to escape through. A good combo is to use Malefice on an enemy walking through Midnight Pulse.
 * Enigma works best with allied heroes who have strong AoE capabilities, such as Warlock or Queen of Pain.
 * Enigma can kill Roshan before the 10-minute mark, with the help of Level 3 or 4 Eidolons. For acquiring them, use Demonic Conversion on either a neutral creep if he's on the Radiant side, or a lane creep if he's on the Dire side. An item commonly picked up is a Medallion of Courage, as it allows him to reduce Roshan's armor for a higher damage output.  Begin the fight by tanking Roshan yourself, until your Eidolons have multiplied; let the Eidolons take over and apply a Healing Salve.  Try to micro the Eidolons to distribute the damage that Roshan does to them.  Re-cast Demonic Conversion on one of the Eidolons before they expire and repeat the process (tank, heal up, nuke).  If executed properly, Roshan will fall within about one minute.
 * Enigma's large mana consumption means that an Arcane Boots can be an effective boots upgrade. If the player chose to ignore upgrading boots, Boots of Travel may be taken later on to take advantage of his pushing power.
 * Necronomicon is a powerful tool when used with Black Hole.
 * Shadow Blade is a viable alternative to Blink Dagger, if enemies do not have detection.
 * Force Staff is a great substitute for Blink Dagger, offering some Intelligence.
 * Rod of Atos also works on Enigma as it helps with both his mana and health.
 * Blademail discourages Heroes outside of your Black Hole from attacking you. Ghost Scepter can be used to a similar effect.
 * Urn of Shadows may also prove to be a useful item on a team with hardcore gankers as the mana regeneration and strength boost really helps him out early in the game.
 * Enigma can get Mekansm and Pipe of Insight quickly thanks to his jungling ability.
 * Linken's Sphere, as an alternative to Black King Bar, is a good item when up against Heroes with single-target disables that go through spell immunity such as Vengeful Spirit.
 * One of the deadliest combos executed with Black Hole is Sand king's Epicenter. Locking all heroes in will allow Sand King to channel it safely, while also making sure the pulses hit 95% of the time, dealing extraordinary damage. Even more so if both have Aghanim's Scepter.
 * Investing 1 point in Midnight Pulse for early game utility is usually enough, You may consider more depending on the lineups (lots of allied lockdown or high strength/high magic resistance enemies)
 * Using Midnight Pulse before Black Hole is often a good idea to boost the damage done. However, you must use this at your discretion because there might not be a time to use it or it can make you miss out on crucial Black Holes.
 * Beware of Rubick as he can counter you very well. While you are channeling Black Hole, you are also very prone to having it stolen or interrupted. While spell immunity prevents most interruption, Rubick's Spell Steal is unaffected by it, and he can potentially ruin your initiation with the Black Hole of his own. Linken's Sphere could be bought to prevent Spell Steal, however keep in mind that Rubick has two other single-target abilities, and possibly a couple of single-target items as well.
 * Shadow Blade may also be bought to avoid all of Rubick's spells if used during Black Hole's channeling. But keep in mind that invisibility is very easily countered by detection items, and if you lack a Black King Bar, his Telekinesis' stun could be used to interrupt you instead.
 * It is always a good idea to refresh your Black Hole immediately after casting, as a teamfight can happen anytime, anywhere. Although, depending on the situation, it is also equally wise to save Refresher Orb for next cast, as a double Black Hole can be very devastating to the enemy team, provided it is executed properly.

Trivia

 * Many of Enigma's responses are references to Friedrich Nietzsche's works; the line, enig attack 08.mp3 "I stare also into you." references a passage in Beyond Good and Evil, where it is stated that "And when you gaze long into an abyss the abyss also gazes into you".
 * Enigma's rival line towards Enig rival 21.mp3 "Even time may fail in the face of gravity.'" is a reference to the time dilating effect of gravity.
 * Many of Enigma's responses are also references to concepts in cosmology (the Big Bang, gravity wells, redshifts, and black holes) or particle physics (path integrals, universal constants).
 * In DotA, Enigma's hero name was Darchrow. In transition to Dota 2, his name was removed, most likely to emphasize his hero title.
 * ,, and  together represent the four fundamental forces of the universe with Enigma representing the gravitational force. This is reflected in several of Enigma's responses to these heroes. enig ally 14.mp3 "The Fundamentals unite."
 * The term "eidolon" comes from ancient greek literature, where it refers to a human-like phantom, the shade of one who died.