Commander 2020: The Complete Set Guide (C20)

Five preconstructed decks. Twenty premium foil commanders. One of the most tightly themed Commander releases Wizards has ever tied to a Standard set. Commander 2020 (set code C20) is a product that rewards you for knowing the world it was built alongside - and still holds up as a starting point for new Commander players today.

What is Commander 2020?

Commander 2020, officially styled as Commander (2020 Edition) and also marketed under the names Commander: Ikoria and Ikoria: Lair of Behemoths Commander decks, is a product in the long-running Commander series released by Wizards of the Coast. The set contains 322 cards across five 100-card preconstructed decks, each built around a legendary creature commander.

It was designed as an integral companion to Ikoria: Lair of Behemoths, the main Standard-legal set released at the same time. In practice, that means the themes, creature types, and mechanical identity of C20 are deeply intertwined with Ikoria's world of giant monsters and human survivors.

A note on the release date: C20 had a complicated launch thanks to the COVID-19 pandemic. Originally scheduled for April 24, 2020, the release was pushed to April 17 for Asia and delayed until May 15, 2020 for the rest of the world.

Each deck includes 100 cards plus an oversized premium foil card of the face commander - a tradition in the Commander precon line going back to the original 2011 release.

The five Commander 2020 decks

C20's five decks span ten of Magic's fifteen three-colour combinations, each anchored by a face commander that reflects a different slice of Ikoria's world.

| Deck name | Colours | Commander | |---|---|---| | Symbiotic Swarm | White/Black/Green | Kathril, Aspect Warper | | Ruthless Regiment | White/Black/Red | Jirina Kudro | | Timeless Wisdom | White/Blue/Red | Gavi, Nest Warden | | Arcane Maelstrom | Blue/Red/Green | Kalamax, the Stormsire | | Enhanced Evolution | Blue/Black/Green | Otrimi, the Ever-Playful |

Each deck includes twenty premium foil commanders across the set as a whole - meaning you get multiple legendary creature options in every box, not just the face commander.

Symbiotic Swarm - White/Black/Green

Kathril, Aspect Warper leads this deck, which leans hard into Ikoria's keyword counter mechanic. The idea is straightforward in theory and satisfying in practice: fill your graveyard with creatures that have useful keyword abilities, then let Kathril distribute those keywords as +1/+1 counters onto your creatures. Deathtouch, flying, lifelink, hexproof - Kathril acts as a living toolbox that rewards you for curating what ends up in your bin.

Ruthless Regiment - White/Black/Red

Jirina Kudro is the commander for the human tribal deck, reflecting Ikoria's lore of humanity banding together against monstrous threats. This is the most straightforwardly aggressive of the five decks, leaning on the strength of a well-supported creature type and Jirina's ability to generate Human tokens whenever she enters the battlefield.

Timeless Wisdom - White/Blue/Red

Gavi, Nest Warden heads up the cycling deck, and this is the one that genuinely surprised people at release. Cycling - the ability to discard a card to draw a card - is a returning mechanic from older sets like Urza's Saga (USG, 1998) and Onslaught (ONS, 2002), and Ikoria brought it back in a big way. Gavi lets you cycle for free once per turn and generates Cat Dinosaur tokens when you cycle. The deck rewards you for treating cycling not just as a card selection tool but as an engine in its own right.

Arcane Maelstrom - Blue/Red/Green

Kalamax, the Stormsire is the face commander for the instants-matter deck. Kalamax gets bigger every time you cast an instant while it's tapped, and it copies the first instant you cast each turn if it is tapped - meaning it rewards you for building around vigilance, combat, and a healthy stack of instants. In my opinion, this is the most combo-friendly of the five decks straight out of the box.

Enhanced Evolution - Blue/Black/Green

Otrimi, the Ever-Playful leads the mutate deck, built around Ikoria's flagship new mechanic. Mutate lets you cast certain creatures onto an existing creature you control, merging the two into something with combined abilities. Otrimi gains the abilities of whatever it mutates over and, when it deals combat damage, lets you return a mutate card from your graveyard to your hand. It's a recursive, build-your-own-monster experience.

Themes and mechanics

C20 introduces and supports several mechanics, some brand new and some returning alongside Ikoria.

Mutate - Ikoria's flagship mechanic

Mutate is the headline new mechanic of the Ikoria block, and Enhanced Evolution is built to show it off. When you cast a creature spell with mutate, you choose an existing non-Human creature you control and pay the mutate cost instead of the regular mana cost. The two cards then merge: one goes on top, one on the bottom, and the resulting permanent has the characteristics of the top card plus all the triggered abilities of every card in the pile.

Rules note: The merged creature is still a single permanent. If it dies, everything in the pile goes to the graveyard together. Managing which card sits on top - and therefore which power, toughness, and types the creature has - is where most of the decision-making lives.

Keyword counters - Kathril's toolkit

Keyword counters are another Ikoria innovation. Rather than granting keyword abilities through text or auras, these are physical +1/+1 counter-style markers that represent a specific keyword. A creature with a flying counter has flying. A creature with a deathtouch counter has deathtouch. Kathril, Aspect Warper is built entirely around this system, distributing keyword counters from your graveyard onto your creatures.

Cycling - a beloved returning mechanic

Cycling has appeared in Magic sets across more than two decades, and it returned as a major theme in Ikoria. The Timeless Wisdom deck treats cycling as a resource-generating engine rather than just a way to smooth your draws. With Gavi on the battlefield, the first cycle each turn costs nothing - turning every cycling card in your hand into a free cantrip that might also make a token.

Lore and setting

Commander 2020 is set on Ikoria, a plane dominated by colossal monsters called Behemoths. Humans on Ikoria have retreated into walled city-states called Lairs, defending themselves against the constant threat of the creatures outside.

The five commanders reflect different factions and philosophies on this plane. Jirina Kudro is a human military leader, embodying the regiment of survivors holding the line. Otrimi and Kalamax represent the wild, dangerous creatures of Ikoria itself. Gavi and Kathril sit somewhere in between - Gavi as a human who works with the strange creatures of the plane, and Kathril as a creature that absorbs the aspects of everything it encounters.

This thematic coherence between the main set and the Commander decks was a deliberate design choice, and it shows. The five decks feel like they exist in the same world, not just the same product line.

Commander 2020's place in the Commander series

C20 sits between Commander 2019 and Commander 2021 in the Commander precon line - a series that Wizards has released annually since 2013, with the original Commander set arriving in 2011. The decision to brand these decks as part of the Ikoria release rather than as a standalone product was notable: it signalled a shift toward tighter integration between Standard sets and their accompanying Commander products, a pattern that would continue with Commander 2021's tie-in with Strixhaven.

In my experience, C20 is remembered fondly for two things: the cycling deck's surprising depth, and mutate being one of the more creatively interesting Commander mechanics of that era - even if the mechanic itself didn't take over the broader format the way some players hoped it might. The keyword counter system is elegant and genuinely fun to play with, especially in Kathril builds where the graveyard becomes as important as the battlefield.

For players looking to start Commander, all five decks remain reasonable entry points, though as with any precon a few years old, the power level of Commander staples has crept upward since 2020.