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#### **The Dawn of Creation (Pre-Dalereckoning)**
- **Before -35,000 DR: The Formation of the Planes**
- During the creation of the multiverse, the Negative Energy Plane emerges as a counterpart to the **Positive Energy Plane**.
- It is a raw, destructive force, embodying entropy, decay, and the absence of life.
- **The Dawn War:**
- In the cosmic war between the **primordials** and the gods, the Negative Energy Plane becomes a battleground.
- Undead entities and negative energy-powered creatures serve the primordials, opposing divine champions.
- The gods seal many of the Negative Energy Plane's greater entities, such as **nightwalkers**, to prevent them from overwhelming the multiverse.
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#### **The Rise of Necromancy (-30,000 DR to -10,000 DR)**
- **The Creation of Undeath:**
- Early necromancers and primal entities discover the Negative Energy Plane as a source of power, crafting the first undead creatures.
- Liches, vampires, and other undead beings begin to exploit the plane’s energies to sustain their existence.
- **Conflict with the Positive Energy Plane:**
- Interplanar clashes erupt between forces aligned with the Positive and Negative Energy Planes.
- Celestial beings seek to curtail the spread of negative energy and its effects on mortal realms.
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#### **The Netherese Experiments (-3,100 DR to -339 DR)**
- **The Rise of Netheril (-3,100 DR):**
- Netherese archmages experiment with the Negative Energy Plane, using its power to create undead servitors and devastating necromantic spells.
- **Karsus**, an archwizard of Netheril, develops necromantic techniques that draw directly from the plane, furthering his magical arsenal.
- **The Fall of Netheril (-339 DR):**
- The collapse of Netheril scatters knowledge of necromancy tied to the Negative Energy Plane.
- Liches and other undead who were dependent on the plane retreat to hidden sanctuaries.
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#### **The Rise of Undead Empires (1 DR to 1300 DR)**
- **100 DR: Thay’s Early Necromancers**
- Early Thayan necromancers draw upon the Negative Energy Plane to create undead armies.
- This marks the foundation of necromantic traditions that would later define **Szass Tam**’s magocracy.
- **714 DR: Fall of Myth Drannor**
- The invasion of fiends and undead into Myth Drannor introduces negative energy anomalies that persist in its ruins.
- These pockets of necrotic energy become portals to the Negative Energy Plane, allowing undead entities to cross into Faerûn.
- **1200 DR: The Necropolis of T’lindhet**
- The Negative Energy Plane empowers the rise of the necropolis of **T’lindhet**, an undead city ruled by a coalition of liches and wights.
- The city becomes a staging ground for necromantic experiments and interplanar incursions.
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#### **The Time of Troubles and the Negative Energy Surge (1358 DR)**
- **1358 DR: The Time of Troubles**
- During the mortal descent of the gods, deities aligned with death and necromancy, such as **Myrkul** and **Bhaal**, temporarily lose control of their divine realms.
- This destabilization causes a surge of negative energy, leading to the spontaneous creation of undead in various parts of Faerûn.
- **Myrkul’s death** amplifies the power of necromantic magic until Kelemvor takes his place as the god of death.
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#### **The Spellplague and Necrotic Chaos (1385 DR to 1487 DR)**
- **1385 DR: The Spellplague**
- The collapse of the Weave creates wild magic zones infused with negative energy.
- These zones act as temporary portals to the Negative Energy Plane, allowing powerful undead entities to enter the Material Plane.
- Areas like **Thay** and **Chult** are particularly affected, as necromancers and undead creatures exploit the chaos.
- **1395 DR: Szass Tam’s Thayan Ascendancy**
- **Szass Tam**, the lich ruler of Thay, consolidates his power by channeling energy from the Negative Energy Plane.
- His necromantic magocracy dominates the region, using undead armies sustained by the plane’s energy.
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#### **The Second Sundering and the Rebalancing (1484 DR to 1487 DR)**
- **1484–1487 DR: The Second Sundering**
- The re-creation of the **Tablets of Fate** restores balance to the multiverse, including stabilizing the connection between the Negative Energy Plane and other realms.
- Many negative energy anomalies created during the Spellplague are sealed or diminished.
- Undead empires reliant on these anomalies begin to weaken, though Thay remains a major necromantic power.
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#### **Modern Era (1490 DR to Present)**
- **1492 DR: Baldur’s Gate 3 and Necrotic Intrigue**
- The followers of **Myrkul** manipulate necrotic energy, exploiting the Negative Energy Plane to empower their undead creations and corrupt Baldur’s Gate.
- **Elder Brains** and other entities experiment with necrotic energy to amplify their control over mortals.
- **Present Day:**
- The Negative Energy Plane remains a significant source of power for necromancers, liches, and undead factions.
- Adventurers often venture into regions affected by negative energy anomalies to confront powerful undead, destroy necrotic artifacts, or seal planar rifts.
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### **Themes of the Negative Energy Plane’s Timeline**
1. **Undeath and Corruption:**
- The plane’s essence is synonymous with decay and death, fostering the rise of undead and necromantic magic across the multiverse.
2. **Interplanar Influence:**
- While not a location mortals can easily survive, the Negative Energy Plane profoundly affects the Material Plane through its necrotic energy.
3. **Conflict with Positive Energy:**
- The ongoing tension between the Positive and Negative Energy Planes reflects the larger cosmological balance between life and death.
4. **Adventuring Opportunities:**
- Planar rifts, undead empires, and necrotic artifacts tied to the Negative Energy Plane provide endless challenges for adventurers.
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