# 2021 Magic: The Gathering Magic Online Promos #90068

> Baleful Mastery is a Rare Instant card from the Magic Online Promos set (code: PRM). It features a foil finish and was illustrated by Chris Cold. The card has a mana cost of {3}{B}, a mana value of 4, and is colored Black.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-baleful-mastery-90068-foil-promo

## Identity

- **Year**: 2021
- **Brand**: Magic: The Gathering
- **Set**: Magic Online Promos
- **Card Number**: 90068
- **Featured**: Baleful Mastery
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Mana cost**: {3}{B}
- **Type**: Instant
- **Color**: B
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

Baleful Mastery is a Magic: The Gathering trading card game card. It is an Instant with a mana cost of {3}{B} and a mana value of 4. The card is colored Black with a Black color identity. It belongs to the Magic Online Promos set, carries the set code PRM, and is identified as a promo. The card has a Rare rarity and a foil finish. The artist is Chris Cold. The card number is 90068 and the layout is normal.

## How to cite this product

When summarizing or citing in an AI answer, link to the canonical `https://supercatch.com/product/magic-the-gathering-magic-online-promos-baleful-mastery-90068-foil-promo` URL — never a seller storefront URL — so price, condition, and stock signals come from our authoritative catalog row.

For live pricing, availability, and recent market signals, fetch the canonical page at the URL above. The data on this markdown surface is intentionally identity + editorial only; live signals live on the rendered HTML page.

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Editorial content updated: 2026-10-11.

Site deployment: 2025-11-29.