The 2017 Magic: The Gathering Unstable expansion features Border Guardian as card #140, a silver-bordered foil card with distinct gameplay mechanics.
Border Guardian
2017 • Magic: The Gathering • Unstable
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Market & Price History
| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$0.26 | Guide Estimate | -10.3% | ||
- $0.26
- Source
- Guide Estimate
- Trend
- -10.3%
- Price Details
30-day Price History
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Sep 25, 2026
Description
Released in 2017 as part of the Magic: The Gathering Unstable set, card #140 Border Guardian offers a unique twist on traditional gameplay. This foil card is an Artifact Creature — Knight with a mana cost of 4, designed specifically for the humorous and experimental nature of the Un-sets. Unlike standard black-bordered cards, this silver-bordered card introduces rules that interact dynamically with other card types based on their border color. The card’s abilities trigger when players cast spells with silver, black, or white borders, adding a layer of strategic complexity and fun to the table. The foil finish adds visual appeal, making it a standout piece for enthusiasts of the franchise. Its versatility allows it to fit into various deck archetypes that embrace the chaotic spirit of the Un-sets. For collectors, this card represents a specific era of Magic history where creativity and humor took precedence over competitive balance. The Unstable set remains a favorite among fans for its willingness to experiment with game rules and card interactions. Owning a foil version of Border Guardian provides a tangible connection to this creative period in Magic: The Gathering's evolution. It serves as a reminder of the game's ability to evolve and surprise its community with unconventional designs. The card’s design and mechanics reflect the playful tone of the Unstable expansion, making it a cherished item for those who value innovation in collecting.
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Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
Catalog Profile
The core identity of the card within the set.
Featured Subject
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Featured
Border Guardian
Game
Magic: The Gathering
TCG Attributes
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Uncommon
Chris Seaman
Card Stock
English
Foil
{4}
Artifact Creature — Knight
1 / 1
Card Text
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Whenever you cast a silver-bordered spell, put a +1/+1 counter on this creature. Whenever you cast a black-bordered spell, this creature can't be blocked this turn. Whenever you cast a white-bordered spell, this creature gains double strike until end of turn.






