# 2026 Magic: The Gathering Secrets of Strixhaven Promos #78p

> Decorum Dissertation is a Magic: The Gathering trading card game card from the Secrets of Strixhaven Promos set (PSOS). It is a Mythic Rare Sorcery — Lesson with a mana cost of {3}{B}{B} and a mana value of 5. The card is colored Black with a color identity of Black. It features a normal layout and was illustrated by Mila Pesic. The card number is 78p and it is a promo card.

Canonical URL: https://supercatch.com/product/magic-the-gathering-secrets-of-strixhaven-promos-decorum-dissertation-78p-promo-mythic-rare

## Identity

- **Year**: 2026
- **Brand**: Magic: The Gathering
- **Set**: Secrets of Strixhaven Promos
- **Card Number**: 78p
- **Featured**: Decorum Dissertation
- **Game**: Magic: The Gathering
- **Rarity**: Mythic Rare
- **Mana cost**: {3}{B}{B}
- **Type**: Sorcery — Lesson
- **Color**: B
- **Language**: English
- **Material**: Card Stock
- **Finish**: Normal

## Description

Decorum Dissertation is a Magic: The Gathering trading card game card from the Secrets of Strixhaven Promos set (PSOS). It is a Mythic Rare Sorcery — Lesson with a mana cost of {3}{B}{B} and a mana value of 5. The card is colored Black with a color identity of Black. It features a normal layout and was illustrated by Mila Pesic. The card number is 78p and it is a promo card.

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Editorial content updated: 2026-10-11.

Site deployment: 2025-11-29.