# 2017 Magic: The Gathering Hour of Devastation Promos #50s

> The Swarm Intelligence foil card from the 2017 Hour of Devastation Promos set is a sought-after Enchantment in Magic: The Gathering.

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## Identity

- **Year**: 2017
- **Brand**: Magic: The Gathering
- **Set**: Hour of Devastation Promos
- **Card Number**: 50s
- **Featured**: Swarm Intelligence
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Mana cost**: {6}{U}
- **Type**: Enchantment
- **Color**: U
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

Released in 2017 as part of the Hour of Devastation Promos series, the Swarm Intelligence card is a foil Enchantment identified by the card number 50s. Designed by Daniel Ljunggren, this card features a {6}{U} mana cost and a mana value of 7, placing it in the blue color identity. The card’s mechanics allow players to copy an instant or sorcery spell whenever it is cast, with the option to choose new targets for the copy. This promo card holds a Rare rarity status within the PHOU set code. The flavor text references the Locust God's children, adding narrative context to the card’s design without altering its gameplay function. Collectors of Magic: The Gathering trading cards often target this card for its unique effect and its status as a promotional release from the Hour of Devastation era. The foil treatment adds a distinct visual element to the card, distinguishing it from non-promo versions. As a seven-mana-cost card, Swarm Intelligence requires significant resource investment to play, making its ability to replicate spells a potent strategic tool in casual formats. The card number 50s places this Hour of Devastation promo within the set's checklist structure. The card’s ability to interact with other spells makes it a versatile addition to decks focused on spell synergy.

## FAQ

### What is the mana cost of Swarm Intelligence?

The Swarm Intelligence card has a mana cost of {6}{U}, totaling a mana value of 7. It is a blue Enchantment in Magic: The Gathering.

### What set is the Swarm Intelligence promo from?

This card is from the Hour of Devastation Promos set, released in 2017. It carries the card number 50s and the set code PHOU.

### What does the Swarm Intelligence card do?

The card allows you to copy an instant or sorcery spell whenever you cast it. You may choose new targets for the copy, providing flexibility in spell resolution.

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Editorial content updated: 2026-10-04.

Site deployment: 2025-11-29.