The List

Creature — Snake Elf Druid

When this creature enters, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

Coiling Oracle

This is the actual decklist that I own.
Draft the Commanders first from a special pool (in the sideboard) with 4 packs of 10 or 12.
Each commander has partner. If you want to use one of the companions, you can do that as well if you abide by the companion rules and color identity rules. For Umori specifically, you may still have creatures as your commanders as long as the rest of the deck follows its companion rules.
I suggest choosing your commanders (and sometimes a companion) before you've drafted from the main pool. 
Each player automatically gets a command tower and an arcane signet.
Before drafting, players can decide if they want to draft 60 card commander decks or full-sized 100 card decks.
Draft 4 packs of 14 for 60 card decks and 6 or 7 packs of 14 for 100 card decks.
Color Identity does not matter when it comes to lands.
Draft Archetypes:
Reanimator
Cast spell, get value
Freecasting
Theft
Copying spells
Value for targeting your own creatures

(The Real) Budget Spellslinger Commander Cube

 Roonoceros 🏰

 Rhinos Yeah

Double Trouble

privé de dessert

​Strain Foxtrot: [pneumonia]
Virulenance: 7.5/10 
Pathology: The newest addition to the armory. This organism operates via extreme cellular filtration (the "Explore" mechanic). Every combat cycle, the organism rapidly sequences its own DNA—either drawing vital lands to flood the board or permanently mutating its host bodies with +1/+1 counters

pulmonary edema 

Strain Charlie - [Toxoplasma gondii]
Virulence: 8/10
​Pathology: Arguably the most insidious organism in the lab. It exhibits aggressive mimicry and neurological attacks, presenting itself to hosts as a symbiotic "Group Hug" organism. In truth, it feeds on opponents' resources, lowering their threat assessment and immune responses until the strain becomes lethal.

Phantasmagoria

This deck charts the path of these two young mages to becoming liches. They of course achieve this thorugh ritual sacrifice. Enjoy!

Coiling Oracle

Rules Text

Card Facts

Legality

Rulings

Every version

Decks using this card