There is a twitch promotion allowing you to get Purple Footprints EffectPurple Footprints EffectBoots Modifier
Stack Size: 20Adds purple footprints to a pair of boots.Right click this item then left click some boots to apply it., Purple Weapon EffectPurple Weapon EffectWeapon Effect
Stack Size: 20Adds a Purple effect to a weapon.Right click this item then left click a weapon to apply it. and Purple Portal EffectPurple Portal EffectPortal ModificationThis character's portals use a purple effect.Right click this to set or remove your Portal effect. if you have twitch prime.
Blood RageSpell, Duration
Mana Cost: (17 to 21)
Can store 1 use(s)
Cooldown Time: 1.00 sec
Cast Time: 0.25 secRequires Level 16Adds a buff that deals Physical Damage over time, while increasing Attack Speed and Life Leech. Killing an enemy while this buff is active refreshes the buff duration, and can grant a Frenzy Charge.Per 1% Quality:
0.25% increased Attack Speed(5-15)% increased Attack Speed
1.2% of Physical Damage from Attacks Leeched as Life
You take 4% of your Maximum Life per second as Physical Damage
You take 4% of your Maximum Energy Shield per second as Physical Damage
25% chance to gain a Frenzy Charge on Kill
Base duration is (7-10.8) secondsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.Acquisition
Centuries ago, ravaging bands of Marauders swept across Oriath, and nearly toppled the monarchy in the capital. Before they met the order's Templars on the battlefield, they chewed the sacred root, and entered the 'Blood Rage'. Under the influence of the Rage, the Marauders knew no fear or pain, and every blow they struck on their enemies rejuvenated their depleted life. The root also drove the Marauders half-crazy with blood lust, causing them to attack with blinding speed as long as there was flesh nearby to hack. The only consequence of the Blood Rage state was a gradual loss of the Marauder's blood, but the magical invigoration from attacking was usually enough to compensate.Description on the official Path of Exile website 
Blood Rage applies a buff that deals physical damage to the player over time, while increasing attack speed and life leech. Killing an enemy while this buff is active refreshes the buff duration, and has a chance to grant a frenzy charge.
Skill functions and interactions
Physical damage reduction: Damage dealt by Blood Rage is lowered by physical damage reduction. Note that armour only reduces physical damage from hits, and thus does not affect the damage taken from Blood Rage.
Gem level progression
This skill is not given as quest reward.
Vendor rewardThis skill can be bought at the listed npc vendors after completing the following quests:
|The Root of the Problem|
|A Fixture of Fate|
Related helmet enchantments
The following helmet enchantments affect Blood Rage:
|EnchantmentBloodRageAttackSpeed1||66||Blood Rage grants additional 8% increased Attack Speed|
|EnchantmentBloodRageAttackSpeed2||75||Blood Rage grants additional 12% increased Attack Speed|
|EnchantmentBloodRageFrenzyOnKill1||66||Blood Rage grants additional 20% chance to gain a Frenzy Charge on Kill|
|EnchantmentBloodRageFrenzyOnKill2||75||Blood Rage grants additional 30% chance to gain a Frenzy Charge on Kill|
- "Dexterity skills". Official Path of Exile website.