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.
Essence of Delirium
Essence of DeliriumStack Size: 9
Essence Tier: 8Upgrades a normal item to rare or reforges a rare item, guaranteeing one property
Weapon: Your Hits inflict Decay, dealing 750 Chaos Damage per second for 10 seconds
Gloves: Socketed Gems deal 30% more Damage over Time
Boots: Cannot be Poisoned
Body Armour: 50% reduced Chaos Damage taken over time
Helmet: +2 to Level of Socketed Aura Gems
Shield: Recover 2% of your maximum Mana when you Block
Quiver: 40% increased Damage with Poison
Amulet: 0.5% of Chaos Damage Leeched as Life
Ring: 40% increased Damage with Poison
Belt: +50% to Chaos Resistance while using a FlaskRight click this item then left click a normal or rare item to apply it.
Shift click to unstack.Acquisition
Essence of Delirium is an essence. It can only be obtained by using a Remnant of CorruptionRemnant of CorruptionStack Size: 9Corrupts the Essences trapping a monster, modifying them unpredictablyRight click this item then left click a monster trapped by Essences to corrupt them. Corrupted Essences cannot be modified again.
Shift click to unstack. on a group of monsters trapped by an essence. See here for more info.