Steel Hellkite

Golem Artisan

Artifact Creature — Golem (3/3)

: Target artifact creature gets +1/+1 until end of turn.
: Target artifact creature gains your choice of flying, trample, or haste until end of turn.

Myr Battlesphere

Artifact Creature — Myr Construct (4/7)

When Myr Battlesphere enters the battlefield, create four 1/1 colorless Myr artifact creature tokens.
Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.

Saberclaw Golem

Artifact Creature — Golem (4/2)

: Saberclaw Golem gains first strike until end of turn.

Hoard-Smelter Dragon

Creature — Dragon (5/5)

Flying
: Destroy target artifact. Hoard-Smelter Dragon gets +X/+0 until end of turn, where X is that artifact's mana value.

Darksteel Sentinel

Artifact Creature — Golem (3/3)

Flash (You may cast this spell any time you could cast an instant.)
Vigilance
Indestructible (Damage and effects that say "destroy" don't destroy this creature. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Ichorclaw Myr

Artifact Creature — Phyrexian Myr (1/1)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.

Precursor Golem

Artifact Creature — Golem (3/3)

When Precursor Golem enters the battlefield, create two 3/3 colorless Golem artifact creature tokens.
Whenever a player casts an instant or sorcery spell that targets only a single Golem, that player copies that spell for each other Golem that spell could target. Each copy targets a different one of those Golems.

Clone Shell

Artifact Creature — Shapeshifter (2/2)

Imprint — When Clone Shell enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library in any order.
When Clone Shell dies, turn the exiled card face up. If it's a creature card, put it onto the battlefield under your control.

Darksteel Juggernaut

Artifact Creature — Juggernaut (0/0)

Indestructible
Darksteel Juggernaut's power and toughness are each equal to the number of artifacts you control.
Darksteel Juggernaut attacks each combat if able.

Wurmcoil Engine

Artifact Creature — Phyrexian Wurm (6/6)

Deathtouch, lifelink
When Wurmcoil Engine dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.

Kuldotha Forgemaster

Artifact Creature — Construct (3/5)

, Sacrifice three artifacts: Search your library for an artifact card, put it onto the battlefield, then shuffle.

Razorfield Thresher

Artifact Creature — Construct (6/4)

Soliton

Artifact Creature — Construct (3/4)

: Untap Soliton.

Molder Beast

Creature — Beast (5/3)

Trample
Whenever an artifact is put into a graveyard from the battlefield, Molder Beast gets +2/+0 until end of turn.

Argentum Armor

Artifact — Equipment

Equipped creature gets +6/+6.
Whenever equipped creature attacks, destroy target permanent.
Equip

Wall of Tanglecord

Artifact Creature — Wall (0/6)

Defender
: Wall of Tanglecord gains reach until end of turn. (It can block creatures with flying.)

Vector Asp

Artifact Creature — Phyrexian Snake (1/1)

: Vector Asp gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Trigon of Rage

Artifact

Trigon of Rage enters the battlefield with three charge counters on it.
, : Put a charge counter on Trigon of Rage.
, , Remove a charge counter from Trigon of Rage: Target creature gets +3/+0 until end of turn.

Contagion Engine

Artifact

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls.
, : Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

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.)