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Horizon Stone
RareMV 5
Artifact
If you would lose unspent mana, that mana becomes colorless instead.
Card capabilities
Artifact
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Digital formats
Other printings
2 other English printingsEarliest 2020-11-20Newest 2020-11-20Cheapest priced $1.24 in CMR
Rulings (2)
wotc10 Nov 2020
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.
wotc10 Nov 2020
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.
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Ranked by shared capabilities, colour identity, mana value and type — never by strategic judgement.
