The 2020 Magic Online Promos Cavern Whisperer foil promo is a Common Nightmare creature card featuring mutate mechanics and menace.
2020 • Magic: The Gathering • Magic Online Promos
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The 2020 Magic Online Promos Cavern Whisperer foil promo is a distinct entry in the Magic: The Gathering catalog, identified by card number 80977. Released as part of the Magic Online Promos series, this Common rarity card carries a Black mana cost of {4}{B} and functions as a Creature — Nightmare with 4 power and 4 toughness. The foil treatment gives this promo variant a shimmering finish that distinguishes it from the non-foil base prints within the set. Gameplay-wise, Cavern Whisperer utilizes the mutate mechanic, allowing players to cast it for {3}{B} to place it over or under a target non-Human creature they own. This interaction combines the abilities of both creatures, creating a synergistic board presence. The card also possesses the menace keyword, meaning it requires two or more creatures to block it effectively. A key strategic feature is its triggered ability: whenever Cavern Whisperer mutates, each opponent must discard a card, providing a potent advantage in resource management. Designed by Steve Ellis, this card appeals to collectors who track specific promo releases and players who utilize mutate strategies in constructed formats. The Magic Online Promos set serves as a unique archive for digital-exclusive cards, making items like the Cavern Whisperer foil promo a notable piece for those cataloging the breadth of Magic Online’s promotional history. Whether building a thematic collection of Nightmare creatures or focusing on the mutate archetype, this card offers both mechanical depth and catalog significance for dedicated Magic: The Gathering enthusiasts.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Cavern Whisperer
Game
Magic: The Gathering
Rarity, print treatment, and game-specific stats for this card.
Common
Steve Ellis
Card Stock
English
Foil
{4}{B}
Creature — Nightmare
4 / 4
B
Abilities, attacks, oracle text, and flavor text printed on the card.
Mutate {3}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Menace (This creature can't be blocked except by two or more creatures.) Whenever this creature mutates, each opponent discards a card.
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