# 2020 Magic: The Gathering Magic Online Promos #79957

> This foil version of Thassa's Intervention is a rare instant card from the 2020 Magic Online Promos set, designed for TCG enthusiasts.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-thassas-intervention-79957-foil

## Identity

- **Year**: 2020
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Magic Online Promos
- **Card number**: #79957
- **Product type**: TCG_CARD

## Description

Thassa's Intervention (79957) is a foil instant card from the 2020 Magic Online Promos set, designed for TCG enthusiasts who value both gameplay utility and collectible aesthetics. As a rare card in the Magic: The Gathering universe, this release features a striking foil finish that enhances its visual appeal for collectors. The card's design, created by artist Zack Stella, emphasizes the blue mana identity central to its gameplay mechanics.

In the game, Thassa's Intervention offers strategic flexibility by allowing players to either search their library or counter an opponent's spell. This dual functionality makes it a notable addition for those building competitive decks or expanding their Magic: The Gathering collection.

Collectors often seek out foil versions of rare cards for their enhanced finish and scarcity within the promo set. This product serves as a tangible link to the strategic depth of Magic: The Gathering, appealing to both seasoned players and new hobbyists. The combination of its foil treatment and strategic value makes it a standout item for any TCG collection.

## FAQ

### What is the mana cost of Thassa's Intervention?

The mana cost for Thassa's Intervention is {X}{U}{U}, requiring one generic mana and two blue mana to cast. Its mana value is 2, making it a relatively low-cost instant spell in Magic: The Gathering.

### Who illustrated Thassa's Intervention?

The card was illustrated by Zack Stella, whose artwork contributes to the visual appeal of this foil card from the Magic Online Promos set.

### What are the gameplay options for Thassa's Intervention?

Players can choose one of two effects: look at the top X cards of their library and put up to two into their hand, or counter a target spell unless its controller pays twice {X}.

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Last verified: 2025-11-29.