Planechase Anthology

Sorcery

For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of turn.

Mass Mutiny

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

Ozai's Funny Prank

Oh Boy, I sure do hope my commander doesn't get shot in the head before I can clone chandras.

Chandra Printer II

Power Hungry (Commander 2013 Preconstructed Deck)

Source: https://magic.wizards.com/en/news/announcements/outlaws-of-thunder-junction-commander-decklists

Mass Mutiny

Rules Text

Card Facts

Legality

Rulings

Every version

Decks using this card