ETCHEDCheapest priced copy (Modern Horizons 3): $0.49 at Card Kingdom, near mint, their price list as of .
Imskir Iron-Eater 
Legendary Creature — Demon · 5/5 · Rare · Modern Horizons 3 · #488
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
When Imskir enters, you draw X cards and you lose X life, where X is half the number of artifacts you control, rounded down.
{3}{R}, Sacrifice an artifact: Imskir deals damage equal to the sacrificed artifact's mana value to any target.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
5 printings · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 3 | 189 | Rare | $0.49 | $0.49 |
| Modern Horizons 3 | 374 | Rare | $0.69 | $4.49 |
| Modern Horizons 3 | 431 | Rare | $0.49 | $0.99 |
| Modern Horizons 3 | 488 | Rare | — | — |
| Modern Horizons 3 Promos | 189s | Rare | — | $1.79 |
3 rulings from Wizards of the Coast
- 7 June 2024Use the mana value of the sacrificed artifact as it last existed on the battlefield to determine how much damage is dealt.
- 7 June 2024The value of X is calculated only once, as Imskir Iron-Eater's triggered ability resolves.
- 7 June 2024If an artifact on the battlefield has {X} in its mana cost, X is 0 when determining its mana value.