# 2013 Magic: The Gathering Magic Online Promos #31433

> This 2013 Magic Online Promos listing features the Tendrils of Agony foil promo card, an Uncommon sorcery with card number 31433.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-tendrils-of-agony-31433-foil-promo

## Identity

- **Year**: 2013
- **Brand**: Magic: The Gathering
- **Set**: Magic Online Promos
- **Card Number**: 31433
- **Featured**: Tendrils of Agony
- **Game**: Magic: The Gathering
- **Rarity**: Uncommon
- **Mana cost**: {2}{B}{B}
- **Type**: Sorcery
- **Color**: B
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

The Tendrils of Agony promo card from the 2013 Magic Online Promos set offers a distinct foil finish for this Uncommon sorcery. Identified by card number 31433, this release targets the collector base interested in the Magic Online promotional ecosystem. The card features artwork by Volkan Baǵa and carries a mana cost of {2}{B}{B} with a mana value of 4. As a black sorcery, the card’s effect allows the caster to target a player who loses 2 life while the caster gains 2 life. The card also includes the Storm keyword ability, which creates copies of the spell for each spell cast earlier in the turn. Players may assign new targets for these copies, making the card highly interactive during gameplay. This mechanic defines the strategic identity of the card within the Magic: The Gathering trading card game framework. The Magic Online Promos set features the foil Tendrils of Agony card, numbered 31433. The foil treatment adds a tactile and visual distinction to the card, separating it from non-promotional prints. Completing a set of Magic Online promos requires acquiring specific numbered releases, with 31433 being a key component for those tracking the full scope of the 2013 promotional output. The combination of the Storm mechanic and the foil finish makes this release a notable entry for enthusiasts of the game's history and mechanics.

## FAQ

### What is the card number for Tendrils of Agony in the Magic Online Promos set?

The card number for Tendrils of Agony in the 2013 Magic Online Promos set is 31433.

### What is the mana cost and mana value of Tendrils of Agony?

Tendril of Agony has a mana cost of {2}{B}{B} and a mana value of 4.

### What does the Storm ability do on this card?

The Storm ability copies the spell for each spell cast before it this turn, allowing the player to choose new targets for the copies.

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Editorial content updated: 2026-10-06.

Site deployment: 2025-11-29.