Cheapest priced copy (Double Masters 2022): $6.49 at Card Kingdom, near mint, their price list as of .
Nim Deathmantle 
Artifact — Equipment · Rare · Scars of Mirrodin · #188
Equipped creature gets +2/+2, has intimidate, and is a black Zombie. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay {4}. If you do, return that card to the battlefield and attach this Equipment to it.
Equip {4}
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $6.49 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters 2022 | 309 | Rare | $6.49 | $8.99Out of stock |
| Double Masters 2022 | 561 | Rare | — | — |
| Scars of Mirrodin | 188 | Rare | $7.49 | $11.99 |
8 rulings from Wizards of the Coast
- 1 January 2011Nim Deathmantle's color-changing and type-changing effects override the equipped creature's previous colors and creature types. After Nim Deathmantle becomes equipped to a creature, that creature will be a black Zombie, not any other colors or creature types.
- 1 January 2011Once Nim Deathmantle returns a card from your graveyard to the battlefield, it will remain on the battlefield indefinitely, even if Nim Deathmantle becomes unattached from it.
- 1 January 2011Once Nim Deathmantle becomes unattached from a creature, its color-changing and type-changing effects stop affecting that creature. The creature will no longer be black and will no longer be a Zombie (unless its printed characteristics or some other effects still cause it to be black and/or a Zombie, of course). This is true even if Nim Deathmantle returned that creature to the battlefield from the graveyard.
- 1 January 2011If the nontoken creature that caused Nim Deathmantle's second ability to trigger is somehow removed from your graveyard before that ability resolves, you may still pay {4} as it resolves. Even if you do, however, no card will be returned to the battlefield.
- 1 January 2011Nim Deathmantle's second ability may return a card it can't equip to the battlefield. For example, if a nontoken artifact that's become a creature is put into your graveyard from the battlefield, Nim Deathmantle's second ability triggers. If you pay {4} as it resolves, you'll return that card to the battlefield. However, Nim Deathmantle can't equip it, so Nim Deathmantle remains attached to whatever it was already equipping (or, if it was unattached, it remains so). The same is true if a nontoken creature with protection from artifacts is put into your graveyard from the battlefield, for example.
- 1 January 2011Nim Deathmantle causes the equipped creature to be a black Zombie even if it didn't return that creature to the battlefield from the graveyard.
- 1 January 2011You choose whether to pay {4} as Nim Deathmantle's second ability resolves. Although players may respond to this ability, once it begins to resolve and you decide whether to pay, it's too late for players to respond.
- 1 January 2011If multiple nontoken creatures are put into your graveyard from the battlefield at the same time, Nim Deathmantle's second ability triggers that many times. You put the triggered abilities on the stack in any order, so you'll determine in which order they resolve. If you pay {4} more than once, each card you paid {4} for will end up on the battlefield under your control, and Nim Deathmantle will end up attached to the last card that returned to the battlefield this way that it could equip.