Archenemy: Nicol Bolas

Creature — Goblin Shaman

Whenever you cast an instant or sorcery spell, this creature deals 2 damage to each opponent.

Guttersnipe

Niv-Mizzet, Parun

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

zada

Monastery Mayhem 🔥 (Copy) (Copy)

Monastery Mayhem 🔥 (Copy)

Prismari Be Slangin’ It

Dork Maxxing

Mario - Colors Weave into a Spire of Mana Deck One

Home

Magic: The Gathering

The Zeta Set

The Hobbit Eternal

Tarkir: Dragonstorm Commander

Foundations Jumpstart

Foundations

Outlaws of Thunder Junction Commander

Ravnica Remastered

Commander Masters

Tales of Middle-earth Commander

Starter Commander Decks

The List

Secret Lair Drop

Commander 2019

GRN Guild Kit

Core Set 2019 Promos

Core Set 2019

Iconic Masters

Conspiracy: Take the Crown

Commander 2013

Return to Ravnica

Magic Online Promos

Guttersnipe

Rules Text

Card Facts

Legality

Rulings

Every version

Decks using this card