Rune Thanatos is an item added by the Thaumic Tinkerer mod only in Thaumcraft 3. When you die with this item on you. All that you are carrying gets stored in it. The rune will then stay where you died, it's invulnerable, and doesn't despawn. When you come back to get it, your inventory will get reorganized to it's original state before death, as best as possible. The rune will shatter in the process.
Thaumonomicon Entry[]
"The last time you got blown up by a creeper right next to a lava lake was a big loss. To that, you are trying to research death itself to find ways of securing your belongings.
When you die with this item on you. All that you are carrying gets stored in it. The rune will then stay where you died, it's invulnerable, and doesn't despawn. When you come back to it, your inventory will get reorganized to it's original state before death, as best as possible. The rune will shatter in the process."
Research Details[]
| Rune Thantos |
|---|
 Vinculum |
 Potentia |
 Mortuus |
Research available after Warded Chest
Crafting[]
You craft it in an Infusion Altar with 1 Zombie Brain, 4 Thaumium, 4 obsidian.
| Rune Thantos | Count |
|---|---|
 Vis charge | 60 |
| Potentia | 12 |
| Mortuus | 16 |
 Praecantatio | 20 |