# 2021 Magic: The Gathering Strixhaven: School of Mages Promos #14s

> The 2021 Strixhaven: School of Mages Promos release features Devastating Mastery, a rare foil sorcery card numbered 14s.

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## Identity

- **Year**: 2021
- **Brand**: Magic: The Gathering
- **Set**: Strixhaven: School of Mages Promos
- **Card Number**: 14s
- **Featured**: Devastating Mastery
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Mana cost**: {2}{W}{W}{W}{W}
- **Type**: Sorcery
- **Color**: W
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

Devastating Mastery is a white sorcery from the 2021 Strixhaven: School of Mages Promos expansion, carrying the specific catalog number 14s. Illustrated by Jake Murray, this foil card features a mana cost of {2}{W}{W}{W}{W} with a mana value of six. The card offers an alternative cost of {2}{W}{W} that, if paid, allows an opponent to choose up to two nonland permanents they control and return them to their owner's hand. Otherwise, the spell destroys all nonland permanents on the battlefield. As a rare promo variant, Devastating Mastery holds a distinct place for Magic: The Gathering enthusiasts who track specific set releases and foil treatments. The Strixhaven: School of Mages Promos set captures the whimsical academic atmosphere of the setting through its unique distribution and design elements. The Strixhaven: School of Mages Promos card Devastating Mastery (14s) features a foil finish and artwork by Jake Murray. This product represents a tangible piece of the 2021 MTG landscape, appealing to those who value specific card numbers and promotional exclusives. Whether viewed as a functional game piece or a collectible artifact, Devastating Mastery stands as a notable entry in the broader catalog of Magic: The Gathering cards. The card is a white Sorcery with mana cost {2}{W}{W}{W}{W} that allows you to pay {2}{W}{W} instead; if that cost is paid, an opponent returns up to two nonland permanents to their hand, and the spell then destroys all nonland permanents.

## FAQ

### What set does card number 14s belong to?

Card number 14s is part of the Strixhaven: School of Mages Promos set released in 2021. It is a rare foil promo card featuring the sorcery Devastating Mastery.

### Who illustrated the Devastating Mastery promo card?

The artwork for the Strixhaven: School of Mages Promos version of Devastating Mastery (14s) was created by Jake Murray.

### What is the mana cost of Devastating Mastery?

Devastating Mastery has a mana cost of {2}{W}{W}{W}{W} and a mana value of six. It can be cast for an alternative cost of {2}{W}{W} to trigger a specific effect.

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Editorial content updated: 2026-10-06.

Site deployment: 2025-11-29.