
Below you can find information related to previous league mechanics in Path of Exile. Information includes "cheat sheets", third-party resources, and other useful tidbits.
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Tower Upgrades

Stage One
Fireball Tower Mk I
Damage: Low
Range: Small
Casts a Fireball
Cost: 100
Stage Two
Fireball Tower Mk II
Damage: Medium
Range: Medium
Casts 3 Fireballs
Cost: 150
Stage Three
Fireball Tower Mk III
Stage Four

Meteor Tower
Damage: Very High
Rains Meteors from the sky
Cost: 500

Flamethrower Tower
Damage: High
Casts a stream of Fire
Cost: 500

Stage One
Chilling Tower Mk I
Damage: Low
Range: Medium
Chills Enemies
Cannot hit Flying Monsters
Cost: 100
Stage Two
Chilling Tower Mk II
Increased effect of Chill
Can apply Chill to more Enemies
Cost: 150
Stage Three
Chilling Tower Mk III
Stage Four

Glacial Cage Tower
Deals no Damage
Imprisons Enemies
Cost: 500

Freezebolt Tower
Damage: Very High
Shoots a Piercing projectile which Freezes enemies
Cost: 500

Stage One
Shock Nova Tower Mk I
Damage: Medium
Range: Small
Creates Shocked Ground
Cannot Hit Flying Monsters
Cost: 100
Stage Two
Shock Nova Tower Mk II
Range: Medium
Increased chance to Shock
Increased Area of Effect
Cost: 150
Stage Three
Shock Nova Tower Mk III
Stage Four

Arc Tower
Damage: Medium
Casts Arc
Cost: 500

Lightning Storm Tower
Damage: High
Lightning rapidly strikes around the Tower
Cost: 500

Stage One
Empowering Tower Mk I
Range: Small
Improves the effectiveness of other Towers
Does not Damage Enemies
Cost: 100
Stage Two
Empowering Tower Mk II
Stage Three
Empowering Tower Mk III
Stage Four

Smothering Tower
Weakens Enemies in range
Does not Damage Enemies
Cost: 500

Imbuing Tower
Improves the effectiveness of Players in range
Does not Damage Enemies
Cost: 500

Stage One
Seismic Tower Mk I
Damage: Low
Range: Small
Stun Frequency: Low
Always Stuns
Cost: 100
Stage Two
Seismic Tower Mk II
Range: Medium
Stun Frequency: Medium
Always Stuns
Cost: 150
Stage Three
Seismic Tower Mk III
Stage Four

Stone Gaze Tower
Periodically Petrifies Monsters
Does not Damage Enemies
Cost: 500

Temporal Tower
Persistently Slows Monsters
Does not Damage Enemies
Cost: 500

Stage One
Summoning Tower Mk I
Summons 1 Minion
Range: Small
Can only summon Minions when previous Minions are dead
Cost: 100
Stage Two
Summoning Tower Mk II
Summons 2 Minions
Range: Medium
Can only summon Minions when previous Minions are dead
Cost: 150
Stage Three
Summoning Tower Mk III
Summons 3 Minions
Range: Large
Can only summon Minions when previous Minions are dead
Cost: 300
Stage Four

Sentinel Tower
Summons 1 Durable Minion
Range: Large
Can only summon Minions when previous Minions are dead
Cost: 500

Scout Tower
Summons 1 Flying Minion
Range: Large
Can only summon Minions when previous Minions are dead
Cost: 500
Encounter Icons
These icons appear above Legion monsters or chests during encounters to notify you of potential drops. It is a good idea to prioritize going for monsters with these icons.
Basic

Weapon

Armour

Trinkets

Uniques

Labyrinth

Divination Cards

Fragments

Gems

Maps

Currency

Random Items

Incubators
League

Talismans

Perandus

Breach

Prophecies

Essences

Harbinger

Abyss

Bestiary

Fossils

Scarabs
Timeless Jewels that drop from Emblem encounters change the nodes and Keystones that surround them when placed on the passive tree. Below, you can see the changes in small notes, notables, and keystones.

Karui - Lethal Pride Timeless Jewel
Small Nodes
Adds +2 / +4 Strength
Notables
Adds a Random Mod
Name On Jewel
Keystone Becomes
Mods
"Kaom"
Strength of Blood
- Recovery from Life Leech is not applied
- 1% less damage taken for every 2% Recovery per second from Life Leech
"Rakiata"
Tempered by War
- 50% of Cold and Lightning Damage taken as Fire Damage
- 50% less Cold Resistance
- 50% less Lightning Resistance
"Kiloava"
Glancing Blows
- Chance to Block Attack Damage is doubled
- Chance to Block Spell Damage is doubled
- You take 50% of Damage from Blocked Hits

Eternal - Elegant Hubris Timeless Jewel
Small Nodes
Removed
Notables
Adds/Changes: Random Mods
Name On Jewel
Keystone Becomes
Mods
"Cadiro"
Supreme Decadence
- Life Recovery from Flasks also applies to Energy Shield
- 30% less Life Recovery from Flasks
"Victario"
Supreme Grandstanding
- Nearby Allies and Enemies share Charges with you
- Enemies hitting you have 10% chance to gain an Endurance, Frenzy or Power Charge
"Chitus"
Supreme Ego
- You can only have one Aura on you from your Skills
- Your Aura Skills do not affect Allies
- 50% more Effect of Auras from your Skills on you
- 50% more Mana Reserved

Vaal - Glorious Vanity Timeless Jewel
Small Nodes
Changes to Random Mods
Notables
Changes to Random Mods
Name On Jewel
Keystone Becomes
Mods
"Xibaqua"
Divine Flesh
- All Damage taken bypasses Energy Shield
- 50% of Elemental Damage taken as Chaos Damage
- +10% to maximum Chaos Resistance
"Zephri"
Eternal Youth
- 50% less Life Regeneration Rate
- 50% less maximum Total Recovery per Second from Life Leech
- Energy Shield Recharge instead applies to Life
"Doryani"
Corrupted Soul
- 50% of Non-Chaos Damage taken bypasses Energy Shield
- Gain 20% of Maximum Life as Extra Maximum Energy Shield

Templar - Militant Faith Timeless Jewel
Small Nodes
Adds +5 Devotion or Changes to +10 Devotion
Notables
Adds +5 Devotion or Changes to Random Mods
Name On Jewel
Keystone Becomes
Mods
"Venarius"
The Agnostic
- Maximum Energy Shield is 0
- While not on Full Life, Sacrifice 20% of Mana per Second to Recover that much Life
"Dominus"
Inner Conviction
- 3% more Spell Damage per Power Charge
- Gain Power Charges instead of Frenzy Charges
"Avarius"
Power of Purpose
- 80% of Maximum Mana is converted to twice that much Armour

Maraketh - Brutal Restraint Timeless Jewel
Small Nodes
Adds +2 / +4 Dexterity
Notables
Adds Random Mods
Name On Jewel
Keystone Becomes
Mods
"Deshret"
Wind Dancer
- 20% less Damage taken if you haven't been hit recently
- 40% less Evasion Rating if you haven't been hit recently
- 20% more Evasion Rating if you've been hit recently
"Asaneth"
Dance with Death
- Can't use Helmets
- Your Critical Strike Chance is Lucky
- Your Damage with Critical Strikes is Lucky
- Enemies' Damage with Critical Strikes against you is Lucky
"Nasima"
Second Sight
- You are Blind
- Blind does not affect your Light Radius
- 25% more Melee Critical Strike Chance while Blinded
Splinter Guide

Karui

Vaal

Templar

Maraketh

Eternal Empire
Click Here to view the source of this sheet.
Fossil Location Guide
-
Magma Fissure
Scorched
Enchanted
Pristine
Prismatic
Encrusted
Faceted
-
Sulphur Vents
Metallic
Perfect
Aetheric
Encrusted
Shuddering
Fractured
-
Petrified Forest
Jagged
Bound
Corroded
Sanctified
Bloodstained
-
The Mines
Metallic
Serrated
Pristine
Aetheric
-
Fungal Caverns
Aberrant
Dense
Corroded
Perfect
Gilded
Tangled
-
Abyssal Depths
Aberrant
Bound
Corroded
Lucent
Hollow
-
Frozen Hollow
Frigid
Serrated
Prismatic
Pristine
Sanctified
Shuddering
Glyphic
Notes
Fossils that are bold and italicized can only be found in Fossil Rooms located in the corresponding areas.
Loot Rooms
These rooms tend to have chests that contain loot, or mechanics that give loot of value.
Armour
Atziri
Breach
Corrupt
Currency
Gems
Jewellery
Maps
Sacrifice
Storage
Strongboxes
Weapons
Augment Rooms
These rooms tend to power-up the Temple and/or give Incursion specific mod drops and uniques at Tier 3.
Fire Damage
Life Regeneration
Lightning Damage
Minions
Pack Size
Poison
Quantity & Life
Tempests
Traps
Other Rooms
Explosives
Nexus
Tormented Spirits
Note: Rooms with green text are seen as more valuable.
Essence Sheet - Created by /u/Conan-The-Librarian

Click Here to view the source of this sheet.
Inactive League Mechanics
Nexus Legend
Reward Nodes
Memory Modifiers

Abyssal Items

Armour



Bestiary Items

Breach Items

Currency Items

Single

Multiple

Divination Cards

Essence Items

Fossil Items

Fractured Items

Fragment Items

Gems

Harbinger Items

Jewellery

Labyrinth Items

Map Items

Perandus Items

Prophecy Items

Scarabs

Talisman Items

Unique Items

Weapons
Memory Tiers

Tier 1 Memory

Tier 2 Memory

Tier 3 Memory
Distant Memories [Bosses]
-
Altered Synthete
Deals cold damage.
-
Twisted Synthete
Deals lightning damage.
-
Augmented Synthete
Deals fire damage.
-
Rewritten Synthete
Deals lightning and physical damage.
-
The Cortex
Deals lightning and physical damage.
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