Hydra (Diablo IV)

Hydra is a Conjuration Fire spell used by  in Diablo IV. It is a remake of the classic Sorceress spell of the same name.

In-game
As with all previous incarnations, Hydra summons a single (and only one at a time) immobile three-headed dragon that does not block enemy pathing. Hydra has three heads, each dealing full damage, and can attack independently. Sorceress dying will despawn the Hydra, but otherwise it cannot be attacked and killed.

Talents:

 * Potent Warding (5): Elemental damage and resistances are increased by 2% per point.
 * Devastation (5): Critical strike chance is increased by 2% per point.
 * Precision Magic (5): Elemental damage increases over time, up to a maximum of 5% per point after 3 seconds. Attacking resets this effect.
 * Inexorable Reach (5): Damage is increased by 3% per point against enemies outside of melee range (calculated from the Sorceress, not from Hydra).
 * Char to Ash (5): Fire damage is increased by 6% per point each second, up to 30% per point. This effect resets when taking damage.
 * Soulfire (5): Fire damage is increased by 4% per point after standing still for 1.5 seconds. Moving cancels this effect.
 * Blaze of Glory (5): Fire Critical strike damage is increased by 3% per point and Burning enemies deal 2% less damage per point to the Sorceress.
 * Burning Resonance (5): Damaging a Burning enemy has up to a 25% chance to restore 2% Mana per point.
 * Devouring Flames (5): Each source of Burning on an enemy increases the direct damage of Fire spells by 2%, up to 2% per point.
 *  (1): direct Fire damage deals an additional 30% damage to Burning targets.
 * Frostbite (5): Damage against Chilled enemies is increased by 2% per point.
 * Endless Winter (1): Critical strike chance against Chilled and Frozen enemies is increased by 30%, but Chill effects no longer Freeze.