Guardian combines marketplace prices, recent sold listings, graded-card estimates, and cross-market checks into one daily card value. We separate raw and graded prices where data is available, ignore obvious outliers, and update card pages as new market data arrives.
"Heroic Intervention [Extended Art Foil]" is a card from the Magic: The Gathering Core Set 2021, classified as an Unknown rarity (#375). Valued at $16.99, this card offers players a potent effect, granting indestructibility and hexproof to their permanents for a turn. Its extended art foil variant appeals to collectors and players alike, contributing to its steady market presence.
Track Heroic Intervention [Extended Art Foil] price trends, view grading values, and get market alerts on Guardian TCG. Updated daily with data from multiple sources.
How much is Heroic Intervention [Extended Art Foil] from Magic Core Set 2021 worth?
Heroic Intervention [Extended Art Foil] from Magic Core Set 2021 is currently worth $16.99 in 2026. Prices are updated daily from multiple sources.
How rare is Heroic Intervention [Extended Art Foil] in Magic Core Set 2021?
Heroic Intervention [Extended Art Foil] is a Unknown card from the Magic Core Set 2021 set in Magic: The Gathering.
Is Heroic Intervention [Extended Art Foil] going up in value?
Heroic Intervention [Extended Art Foil] has decreased 0.0% in the last 7 days. Current Guardian Estimate: $16.99.
Where can I buy Heroic Intervention [Extended Art Foil]?
You can compare prices and buy Heroic Intervention [Extended Art Foil] on TCGPlayer, eBay, and CardMarket. Guardian TCG tracks live prices from all three sources — current Guardian Estimate: $16.99.
How much is Heroic Intervention [Extended Art Foil] from Magic Core Set 2021 worth?
Heroic Intervention [Extended Art Foil] from Magic Core Set 2021 is currently worth $16.99 in 2026. Prices are updated daily from multiple sources.
How rare is Heroic Intervention [Extended Art Foil] in Magic Core Set 2021?
Heroic Intervention [Extended Art Foil] is a Unknown card from the Magic Core Set 2021 set in Magic: The Gathering.
Is Heroic Intervention [Extended Art Foil] going up in value?
Heroic Intervention [Extended Art Foil] has decreased 0.0% in the last 7 days. Current Guardian Estimate: $16.99.
Where can I buy Heroic Intervention [Extended Art Foil]?
You can compare prices and buy Heroic Intervention [Extended Art Foil] on TCGPlayer, eBay, and CardMarket. Guardian TCG tracks live prices from all three sources — current Guardian Estimate: $16.99.
High-value cards to discover
Internal discovery links for inventory flagged as under-linked.