Enchantress

Eirena the Enchantress is one of the three classes of followers in Diablo III.

She is a ranged-attacker, a spell-caster, and a buffer, with some spells resembling those of the Wizard.

Full info about Followers in Diablo III.
- Kormac the Templar.
- Lydon the Scoundrel.

Lore

Enchantress concept art.

The follower Eirena has the most shadowy and ambiguous lore out of the three followers. In an interview with FZ.se[1], Leonard Boyarsky had this to say about her:

Then we have the Enchantress - Eirena – whose past is shrouded in mystery. She follows a mysterious figure called The Prophet and is good at controlling groups of enemies. The player will learn more about her dark past as they progress through the main story.

Each follower has their own questline that the player can choose to pursue if they wish, but Eirena's plot is the least known of the three. It is possible that she may have some interaction with elements in Caldeum, as she seems to dip into the same arcane arts as the Wizard.

Gear

The followers in Diablo III are much more restricted in what they can equip from what we've seen in the mercenaries in Diablo II: Lord of Destruction. The Enchantress is able to equip two-handed staves, two-handed swords, two-handed maces, or two-handed axes, two rings, one amulet and a Enchantress specific item called Enchantress Focuses at level 21. She appears to be brandishing two-handed staff or a wand and a Orb in more than one screenshot.

Like the other followers, Eirena has three tiers of gear progression, which are based upon level.

Three levels of gear progression for the Enchantress.

Skills

Much like the player character classes, followers are able to learn a few skills or spells at specific level milestones. Not much is known about the skills, currently, besides their names and when they are unlocked. Players may choose one skill from each tier. Follower skills cannot be modified by runes, and they only have one rank.

While, oddly enough, gaining some of the Necromancer's abilities from Diablo II, the spell kit for the Enchantress appears to be very similar to that which is seen with the Wizard, namely a fixation on unstable Arcane powers.

Unlocked at Level 15

Charm -- Charms an enemy to fight for you for 8 to 11 seconds.Cooldown: 15 seconds.

Disorient -- Cast a flash of confusion on a group of enemies in an area, causing them to stumble around disoriented for 9 - 18 seconds.
Damage done to confused targets will break the effect. Cooldown: 15 seconds

Unlocked at Level 20

Powered Armor -- Enchantress buffs herself and her allies, increasing Defense by 10%. Attackers are slowed by 40% for 3 seconds.

Reflect Missiles -- Place a shield on the Enchantress and her allies that reflects incoming projectiles for 5 seconds. Cooldown: 20 seconds.

Unlocked at Level 25

Forceful Push -- Summon an arcane explosion 15 yards around an enemy, dealing 200% weapon damage as arcane damage and knocking back all monsters caught within it. Cooldown: 10 seconds.

Scorched Earth -- Bathe an area of ground with pure arcane energy for 3 seconds. Enemies caught in the arcane pool take an extra 50% damage from all attacks for 3, are slowed by 75%, and take 50% weapon damage as arcane damage per second. Cooldown: 10 seconds.

Unlocked at Level 30

Focused Mind -- The Enchantress places a buff on her allies increasing attack speed by 10% for 10 seconds. Cooldown: 30 seconds.

Mass Hex -- When the player is low on health, the Enchantress lobs a bulb of magical energy at the player that will hex all enemies within 15 yards into chickens for 4 seconds.
Hexed enemies are unable to perform offensive actions. Cooldown: 30 seconds.