Increasing Vengeance is a foil card from the Dark Ascension set of Magic: The Gathering, classified as an Unknown rarity. Currently valued at $2.75, it offers players a unique option in burn and spell-focused decks with its ability to flash back and double spells. Collectors may find interest in its foil version, which adds a layer of visual appeal and potential market value. The card's versatility in gameplay ensures its relevance in various formats.