Nameless Venom

Venom for raising Rock Drakes

This consumable from the Aberration content is listed as Nameless Venom in ARK: Survival Evolved and as Nameless Venom (Res) in ARK: Survival Ascended. The ARK Wiki ties it to two DLCs, Aberration and Fjordur. The ASE item text calls it "A volatile substance that can be used to raise Rock Drakes!", and the ASA description says plainly that it comes from Nameless and serves to raise a Rock Drake.

Food for a young Rock Drake

Baby Rock Drakes are raised and imprinted with this venom, and each one eaten restores 400 hunger points. No other food is accepted by a Rock Drake before it reaches the adult stage: babies, juveniles and adolescents refuse raw and cooked meat alike. An adult can still be force-fed the venom to regain 100 Health, roughly the way Medical Brew works for survivors. Wyvern Milk restores more hunger, but the two have something in common: each is the required food for the young of its own creature, and neither can be stored in a Refrigerator.

Cure, antidote and tribute

• Antidote: it is the natural cure for Lamprey Poison, and the only one. The wiki advises drinking it only when afflicted: it also drains 50 Health over time.
• Swamp fever: the wiki lists it as a cure for swamp fever as well.
• Boss tribute: the venom is part of the tribute that summons Rockwell at Beta or Alpha difficulty. In ASE our records count 2 recipes that use it: 20 for the Generate Aberration (Alpha) Portal and 12 for the Generate Aberration (Beta) Portal. Because of the spoil time, the wiki suggests gathering it only when the fight is close.

Where it is gathered

On Aberration the venom comes from killing Nameless: it is a rare drop when harvesting their corpses, and the wiki suggests keeping a few on hand before starting to raise a Rock Drake. It also warns that alpha-affected Nameless left alive too long may let a Subterranean Reaper King emerge. On Fjordur the venom is a harvestable resource in Beiygjaheimr, and on Astraeos it can be harvested from Pulmonoscorpius Monarchs. Our records list one loot entry, Nameless, and place the venom on 4 maps: Aberration, Valguero, Lost Colony and Astraeos.

Spoil time and server transfers

The venom spoils after 30 minutes (1800 seconds), weighs 0.1 and does not stack. Kept inside Fenrir, its spoil timer becomes 2 days and 2 hours, and Preserving Salt doubles that. According to the wiki it is the only tribute item that can move to another server through an inventory transfer; watch the timer so it does not spoil before the character has transferred.