← All precons

Stock Commander precon

Arcane Maelstrom

Kalamax, the Stormsire

Commander 2020 / 17 Apr 2020 / 100 cards

Art by Nicholas Gregory, © Wizards of the Coast.

Download stock listSign in to save this deckSign in to try a change ↗

Read the evidence

How it compares

Sources & method ↗
Experimental

Meta rank

Not rankedNeeds shared evidence

Human tables

Real-game win rate

No real-game data

Phase simulation

Model win rate

16.0%156 games / #168

Published interval coverage: 90% (game bootstrap). Versus 174 stock precons, four-player pods. Analysed 24 Oct 2026.

90% interval: 13.6%–18.7%.

Rank range 150–172. Observed wins: 7.7%.

Upgradeability

Package ungraded0/3 configurations graded. Unassessed options may be stronger.

3 colour-compatible in-box commander configurations inventoried 2026-10-28. 3 have validated simulation lists. Inventory complete for the checked stock list.

This package includes every inventoried stock-compatible commander configuration. Highest supported upgrade grade describes the named assessed options, not overall deck power or a proven best commander. Unassessed options may be stronger. Outside commander swaps are excluded from the package summary.

Other included legends

These cannot lead the complete unchanged stock pool with a checked configuration: Etali, Primal Storm, Melek, Izzet Paragon, Rashmi, Eternities Crafter, Talrand, Sky Summoner, Wort, the Raidmother.

Kalamax, the Stormsire

Download Kalamax, the Stormsire comparison list. 100/100 card copies retained. Legality and colours checked 2026-10-28. Any stock results elsewhere on this page belong to the reference catalog snapshot, not to alternative commander lists.

Ungraded

No source-backed upgrade assessment is recorded for this stock commander and theme.

Yama's editorial judgment of improvement options for the stated commander configuration while retaining the precon’s main theme. Based on the cited guides, checked card examples and commander restrictions. No upgrade win-rate estimate is available. Audited 2026-10-27. Catalog list.

Commander rules: Kalamax, the Stormsire.

What 1–5 means
GradeMeaning
1: MinimalIndividual replacements do little for the main plan; its limiting mechanism remains.
2: NarrowUseful replacements exist, but a commander or theme restriction blocks most further gains.
3: WorkableA documented package improves the plan, with a persistent setup, combat or card-pool limit.
4: BroadSeveral compatible packages improve the plan and its finish; important restrictions still apply.
5: ExceptionalThe commander supplies repeatable resources and a direct finish; on-theme additions strengthen both.

These are Yama’s ordinal judgments, with no measured win-rate gain attached. A grade belongs to the stated commander configuration and retained main theme. Assess on-theme commander swaps separately; a replacement strategy is a separate deck build. Missing evidence means ungraded. Targeted changes refine the main package; Moderate replaces several packages; Substantial removes much of the shell. Effort describes work, not a budget or Commander bracket.

Reviews and upgrade guides

No review or upgrade guide has been assessed for this list.

Commander results

Playgroup commander results include stock and modified lists, mixed pod sizes and opponents. The raw rate is wins divided by games, not four-player normalised. Partner commanders are separate observations, not a pair's rate. Do not subtract a stock-precon rate to estimate upgrade gain.

Playgroup.gg / Arcane Digital B.V., aggregate statistics under CC BY 4.0. Source refresh dates are not provided by this endpoint.

Other commander options

Each option has its own assessment and comparison list. Stock results elsewhere on this page are not results for these alternative lists.

Xyris, the Writhing Storm: Ungraded

Alternative commander from the box

Download Xyris, the Writhing Storm comparison list. 100/100 card copies retained. Legality and colours checked 2026-10-28. No matched simulation results are attached to this commander option.

Ungraded

Included commander option: leadership and colour compatibility checked. Theme fit and upgrade potential have not been assessed; no grade or simulation result is assigned.

Catalog list.

Commander rules: Xyris, the Writhing Storm.

Reviews and upgrade guides

No review or upgrade guide has been assessed for this list.

Commander results

Haldan, Avid Arcanist + Pako, Arcane Retriever: Ungraded

Alternative commander from the box

Download Haldan, Avid Arcanist + Pako, Arcane Retriever comparison list. 100/100 card copies retained. Legality and colours checked 2026-10-28. No matched simulation results are attached to this commander option.

Ungraded

Included commander option: leadership and colour compatibility checked. Theme fit and upgrade potential have not been assessed; no grade or simulation result is assigned.

Catalog list.

Commander rules: Haldan, Avid Arcanist, Pako, Arcane Retriever.

Reviews and upgrade guides

No review or upgrade guide has been assessed for this list.

Commander results

Market references

What it costs

Sealed deck

$110.51TCGplayer / TCGCSV26 Oct 2026

Singles replacement

$130.63TCGplayer / Scryfall28 Oct 2026

100 priced copies; 0 without a price.

About market prices

Market references are not store quotes, proof of availability or resale offers. Singles estimate the cost of replacing the list, rather than what you could sell it for.

Known Phase card support gaps (2)

Haldan, Avid Arcanist, Jace, Architect of Thought. Catalog coverage is separate from published run confidence.

The original 100 cards

Stock decklist

Reviews & upgrades on EDHREC ↗

Catalog updated 22 Oct 2026. MTGJSON source. Images and card details from Scryfall.

Commander 1

Main deck 99

Select the list to copy