
Combat Thresher | Artifact Creature | Construct | Prototype {2}{W} — 1/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Double strike
When Combat Thresher enters the battlefield, draw a card. | Victor Harmatiuk
4.0 LSV

Yotian Frontliner | Artifact Creature | Soldier | Whenever Yotian Frontliner attacks, another target creature you control gets +1/+1 until end of turn.
Unearth {W} ({W}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Jehan Choo
2.0 LSV

Hulking Metamorph | Artifact Creature | Shapeshifter | Prototype {2}{U}{U} — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
You may have Hulking Metamorph enter the battlefield as a copy of an artifact or creature you control, except it's an artifact creature in addition to its other types, and its power and toughness are equal to Hulking Metamorph's power and toughness. | Diego Gisbert
3.5 LSV

Spotter Thopter | Artifact Creature | Thopter | Prototype {3}{U} — 2/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Flying
When Spotter Thopter enters the battlefield, scry X, where X is its power. | Michael Phillippi
3.0 LSV

Ashnod's Harvester | Artifact Creature | Construct | Whenever Ashnod's Harvester attacks, exile target card from a graveyard.
Unearth {1}{B} ({1}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Halil Ural
3.0 LSV

Transmogrant Altar | Artifact | | {B}, {T}, Sacrifice a creature: Add {C}{C}{C}.
{2}, {T}, Sacrifice a creature: Create a 3/3 colorless Zombie artifact creature token. Activate only as a sorcery. | Dan Scott
1.0/3.0 LSV

Fallaji Dragon Engine | Artifact Creature | Dragon | Prototype {2}{R} — 1/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Flying
{2}: Fallaji Dragon Engine gets +1/+0 until end of turn. | Filip Burburan
3.0 LSV

Heavyweight Demolisher | Artifact Creature | Construct | Menace
At the beginning of your upkeep, tap Heavyweight Demolisher unless you pay {3}.
Unearth {6}{R}{R} ({6}{R}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Svetlin Velinov
2.0 LSV

Mishra's Research Desk | Artifact | | {1}, {T}, Sacrifice Mishra's Research Desk: Exile the top two cards of your library. Choose one of them. Until the end of your next turn, you may play that card.
Unearth {1}{R} ({1}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Matt Stewart
1.5 LSV

Cradle Clearcutter | Artifact Creature | Golem | Prototype {2}{G} - 1/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
{T}: Add an amount of {G} equal to Cradle Clearcutter's power. | Daarken
3.0 LSV

Haywire Mite | Artifact Creature | Insect | When Haywire Mite dies, you gain 2 life.
{G}, Sacrifice Haywire Mite: Exile target noncreature artifact or noncreature enchantment. | Izzy
2.0 LSV

Iron-Craw Crusher | Artifact Creature | Wurm | Prototype {2}{G}{G} — 2/5 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Whenever Iron-Craw Crusher attacks, target attacking creature gets +X/+0 until end of turn, where X is Iron-Craw Crusher's power. | Filip Burburan
3.5 LSV

Mask of the Jadecrafter | Artifact | | {X}, {T}, Sacrifice Mask of the Jadecrafter: Create an X/X colorless Golem artifact creature token. Activate only as a sorcery.
Unearth {2}{G} ({2}{G}: Return this card from your graveyard to the battlefield. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Alessandra Pisano
2.0 LSV

Argivian Avenger | Artifact Creature | Shapeshifter | {1}: Until end of turn, Argivian Avenger gets -1/-1 and gains your choice of flying, vigilance, deathtouch, or haste. | Milivoj Ćeran
2.0 LSV

Levitating Statue | Artifact | | Flying
Whenever you cast a noncreature spell, put a +1/+1 counter on Levitating Statue.
{2}: Levitating Statue becomes a 1/1 Construct artifact creature until end of turn. | Artur Nakhodkin
2.5 LSV

Reconstructed Thopter | Artifact Creature | Thopter | Flying
Unearth {2} ({2}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Dan Scott
2.5 LSV

Slagstone Refinery | Artifact | | Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Victor Harmatiuk
1.0 LSV

Spectrum Sentinel | Artifact Creature | Soldier | Protection from multicolored (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything multicolored.)
Whenever a nonbasic land enters the battlefield under an opponent's control, you gain 1 life. | Olivier Bernard
1.0 LSV

Steel Exemplar | Artifact Creature | Wizard | Trample
Steel Exemplar enters the battlefield with two +1/+1 counters on it unless two or more colors of mana were spent to cast it. | Kekai Kotaki
2.5 LSV

Su-Chi Cave Guard | Artifact Creature | Construct | Vigilance
Ward {4} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {4}.)
When Su-Chi Cave Guard dies, add eight {C}. Until end of turn, you don't lose this mana as steps and phases end. | Dmitry Burmak
4.0 LSV

Symmetry Matrix | Artifact | | Whenever a creature with power equal to its toughness enters the battlefield under your control, you may pay {1}. If you do, draw a card. | Slawomir Maniak
0.0/3.0 LSV

Thran Power Suit | Artifact | Equipment | Equipped creature gets +1/+1 for each Aura and Equipment attached to it and has ward {2}. (Whenever equipped creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) | Raf Kayupov
1.5 LSV