Horizon Stone
Tracked across real Commander games played through TurnZero HQ.
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What it does
If you would lose unspent mana, that mana becomes colorless instead.
Rulings
2 official rulings, in the order Wizards published them.
- 2020-11-10
If unspent mana you have has any restrictions or riders associated with it (for example, if it was produced by Jeweled Lotus), those restrictions or riders remain associated with that mana when it becomes colorless.
- 2020-11-10
As long as Horizon Stone remains under your control, you'll retain unspent mana as steps and phases end, although that mana will become colorless. This means you can add mana and spend it during a future step, phase, or turn. Once Horizon Stone leaves your control, you'll have until the end of the current step or phase to spend the mana before it is lost.
Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.
In the 99
Every deck whose current list includes Horizon Stone, whatever its commander.
Most played under
| Commander | Decks | Games | Win rate |
|---|---|---|---|
| Jorn, God of Winter | 1 | 0 | — |
Colors it shows up in
- Sultai 1 deck
Every version of Horizon Stone
2 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly — a printing with no figure shows a dash rather than a zero, because Scryfall genuinely publishes none for some of them.

- Normal
- $1.14
- Foil
- $1.65

Extended Art
- Normal
- $4.27
- Foil
- $7.07
Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Horizon Stone — a name search across every version, for the printings TCGplayer publishes no direct link to.
Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only — no individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.