# 2023 Magic: The Gathering The Lost Caverns of Ixalan Promos #257s

> The foil Mythic Rare legendary artifact The Millennium Calendar from the 2023 Lost Caverns of Ixalan Promos set. This promotional card offers a unique gameplay mechanic for Magic: The Gathering collectors.

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## Identity

- **Year**: 2023
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: The Lost Caverns of Ixalan Promos
- **Card number**: #257s
- **Product type**: TCG_CARD

## Description

The Millennium Calendar (card #257s) is a foil Mythic Rare promotional card from Magic: The Gathering’s 2023 Lost Caverns of Ixalan Promos set. Designed by Zoltan Boros, this legendary artifact features a unique mana cost of just one generic mana, making it an intriguing addition to any Magic: The Gathering collection. Its gameplay revolves around time counters, allowing players to accumulate resources through their untap steps and double them with a simple activation.

For collectors, this card represents a distinct moment in the Ixalan block’s promotional history. The foil treatment adds visual appeal, while the card’s strategic potential appeals to players who enjoy artifact-based strategies. This product highlights the creativity behind Magic: The Gathering’s promotional releases, offering both gameplay utility and collectible value.

Whether you are a seasoned collector or new to the trading card game, this card stands out for its low mana cost and powerful end-game condition. It serves as a compelling piece for those interested in artifact synergy and time counter mechanics.

## FAQ

### What is the mana cost of The Millennium Calendar?

The Millennium Calendar has a mana cost of one generic mana, making it one of the most affordable legendary artifacts in terms of casting cost.

### How does The Millennium Calendar's ability work?

The card allows you to place time counters on it as you untap permanents, and you can double those counters for two mana. When it reaches 1,000 counters, it can be sacrificed to make each opponent lose 1,000 life.

### Is The Millennium Calendar a foil card in the Lost Caverns of Ixalan Promos set?

Yes, the version listed here is the foil Mythic Rare promotional card, designated as card number 257s in the 2023 set.

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Last verified: 2025-11-29.