Street Sweeper

Artifact Creature - Construct

Whenever Street Sweeper attacks, destroy all Auras attached to target land.

The sweepers roam endlessly, scrubbing away the refuse-and anything else too slow or too clumsy to get out of their way.

Sharding Sphinx

Artifact Creature - Sphinx

Flying

Whenever an artifact creature you control deals combat damage to a player, you may put a 1/1 blue Thopter artifact creature token with flying onto the battlefield.

Whether mechanical or biological, life finds a way to propagate itself.

Steelclad Serpent

Artifact Creature - Serpent

Steelclad Serpent can't attack unless you control another artifact.

"From the highest towers to the deepest sea, all life must be touched by etherium."
-Lodus of the Ethersworn

Salvage Titan

Artifact Creature - Golem

You may sacrifice three artifacts rather than pay Salvage Titan's mana cost.

Exile three artifact cards from your graveyard: Return Salvage Titan from your graveyard to your hand.

Sharuum the Hegemon

Legendary Artifact Creature - Sphinx

Flying

When Sharuum the Hegemon enters the battlefield, you may return target artifact card from your graveyard to the battlefield.

To gain audience with the hegemon, one must bring a riddle she has not heard.

Moltensteel Dragon

Artifact Creature - Dragon

( can be paid with either or 2 life.)

Flying

: Moltensteel Dragon gets +1/+0 until end of turn.

An apocalypse in dragon form.

Thundering Tanadon

Artifact Creature - Beast

( can be paid with either or 2 life.)

Trample

"We do not need beakers and vials to test our predators."
-Vorinclex, Voice of Hunger

Caged Sun

Artifact

As Caged Sun enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability adds one or more mana of the chosen color to your mana pool, add one additional mana of that color to your mana pool.

Necropouncer

Artifact - Equipment

Living weapon (When this Equipment enters the battlefield, put a 0/0 black Germ creature token onto the battlefield, then attach this to it.)

Equipped creature gets +3/+1 and has haste.

Equip

Omen Machine

Artifact

Players can't draw cards.

At the beginning of each player's draw step, that player exiles the top card of his or her library. If it's a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Soul Conduit

Artifact

, : Two target players exchange life totals.

"You have an unhealthy attachment to your selfhood. I can help you with that."
-Malcator, Executor of Synthesis

Knowledge Pool

Artifact

Imprint - When Knowledge Pool enters the battlefield, each player exiles the top three cards of his or her library.

Whenever a player casts a spell from his or her hand, that player exiles it. If the player does, he or she may cast another nonland card exiled with Knowledge Pool without paying that card's mana cost.

Lumengrid Gargoyle

Artifact Creature - Gargoyle

Flying

"Anything that watches without sleep and fights without fear is a valuable ally against the Phyrexians."
-Kara Vrist, Neurok agent

Phyrexian Juggernaut

Artifact Creature - Juggernaut

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Phyrexian Juggernaut attacks each turn if able.

Where nature impedes, Phyrexians overcome.

Razorfield Rhino

Artifact Creature - Rhino

Metalcraft - Razorfield Rhino gets +2/+2 as long as you control three or more artifacts.

Adapted to tread on razorgrass, the rhino proved adept at treading on Phyrexians as well.

Thopter Assembly

Artifact Creature - Thopter

Flying

At the beginning of your upkeep, if you control no Thopters other than Thopter Assembly, return Thopter Assembly to its owner's hand and put five 1/1 colorless Thopter artifact creature tokens with flying onto the battlefield.

Argentum Armor

Artifact - Equipment

Equipped creature gets +6/+6.

Whenever equipped creature attacks, destroy target permanent.

Equip

Mirrodin's creator still lives, still shapes metal, and still commands world-shaking power.

Contagion Engine

Artifact

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls.

, : Proliferate, then proliferate again. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there. Then do it again.)

Darksteel Sentinel

Artifact Creature - Golem

Flash (You may cast this spell any time you could cast an instant.)

Vigilance

Darksteel Sentinel is indestructible. (Lethal damage and effects that say "destroy" don't destroy it. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Mindslaver

Legendary Artifact

, , Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)

It's a helm that leaves the head at its most vulnerable.

Steel Hellkite

Artifact Creature - Dragon

Flying

: Steel Hellkite gets +1/+0 until end of turn.

: Destroy each nonland permanent with converted mana cost X whose controller was dealt combat damage by Steel Hellkite this turn. Activate this ability only once each turn.

Wurmcoil Engine

Artifact Creature - Wurm

Deathtouch, lifelink

When Wurmcoil Engine dies, put a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature token with lifelink onto the battlefield.

Dreamstone Hedron

Artifact

: Add to your mana pool.

, , Sacrifice Dreamstone Hedron: Draw three cards.

Only the Eldrazi mind thinks in the warped paths required to open the hedrons and tap the power within.

Enatu Golem

Artifact Creature - Golem

When Enatu Golem dies, you gain 4 life.

Golems conjured from the debris of Enatu Temple provided a sturdy but expendable first line of defense against the Eldrazi.

Keening Stone

Artifact

, : Target player puts the top X cards of his or her library into his or her graveyard, where X is the number of cards in that player's graveyard.

As it spins, dead voices shriek in an ever-increasing cacophony, rending the mind asunder.

Eternity Vessel

Artifact

Eternity Vessel enters the battlefield with X charge counters on it, where X is your life total.

Landfall - Whenever a land enters the battlefield under your control, you may have your life total become the number of charge counters on Eternity Vessel.

Sanctum Plowbeast

Artifact Creature - Beast

Defender

Plainscycling , islandcycling (, Discard this card: Search your library for a Plains or Island card, reveal it, and put it into your hand. Then shuffle your library.)

Triskelion

Artifact Creature - Construct

Triskelion enters the battlefield with three +1/+1 counters on it.

Remove a +1/+1 counter from Triskelion: Triskelion deals 1 damage to target creature or player.

"Why do bad things always come in threes?"
-Gisulf, expedition survivor

Obelisk of Alara

Artifact

, : You gain 5 life.

, : Draw a card, then discard a card.

, : Target creature gets -2/-2 until end of turn.

, : Obelisk of Alara deals 3 damage to target player.

, : Target creature gets +4/+4 until end of turn.

Ward of Bones

Artifact

Each opponent who controls more creatures than you can't play creature cards. The same is true for artifacts, enchantments, and lands.

Mages dare not attempt magic in its grotesque presence.

Rattleblaze Scarecrow

Artifact Creature - Scarecrow

Rattleblaze Scarecrow has persist as long as you control a black creature. (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Rattleblaze Scarecrow has haste as long as you control a red creature.

Thornwatch Scarecrow

Artifact Creature - Scarecrow

Thornwatch Scarecrow has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)

Thornwatch Scarecrow has vigilance as long as you control a white creature.

Composite Golem

Artifact Creature - Golem

Sacrifice Composite Golem: Add to your mana pool.

An artificer's experiment in cross-material engineering found its own purpose as an interpreter between cultures.

Beast of Burden

Artifact Creature - Golem

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Though it was built as an instrument of labor, it wasn't long before it became an instrument of war.

Booby Trap

Artifact

As Booby Trap enters the battlefield, name a card other than a basic land card and choose an opponent.

The chosen player reveals each card he or she draws.

When the chosen player draws the named card, sacrifice Booby Trap. If you do, Booby Trap deals 10 damage to that player.

Brass Herald

Artifact Creature - Golem

As Brass Herald enters the battlefield, choose a creature type.

When Brass Herald enters the battlefield, reveal the top four cards of your library. Put all creature cards of the chosen type revealed this way into your hand and the rest on the bottom of your library in any order.

Creatures of the chosen type get +1/+1.

Planar Portal

Artifact

, : Search your library for a card and put that card into your hand. Then shuffle your library.

These devices have been known to pull entire worlds through the Æther.

Urza's Armor

Artifact

If a source would deal damage to you, prevent 1 of that damage.

Urza protected his body well, but neglected his soul.

Duplicant

Artifact Creature - Shapeshifter

Imprint - When Duplicant enters the battlefield, you may exile target nontoken creature.

As long as the exiled card is a creature card, Duplicant has that card's power, toughness, and creature types. It's still a Shapeshifter.

Gate to the Æther

Artifact

At the beginning of each player's upkeep, that player reveals the top card of his or her library. If it's an artifact, creature, enchantment, or land card, the player may put it onto the battlefield.