Gust-Skimmer

Artifact Creature — Insect (2/1)

: Gust-Skimmer gains flying until end of turn.

Halo Scarab

Artifact Creature — Insect (2/1)

, Exile Halo Scarab from your graveyard: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Haunted Guardian

Artifact Creature — Construct (2/1)

Defender, first strike

Hedron Crawler

Artifact Creature — Construct (0/1)

: Add . ( represents colorless mana.)

Hovermyr

Artifact Creature — Myr (1/2)

Flying, vigilance

Immolating Souleater

Artifact Creature — Phyrexian Dog (1/1)

: Immolating Souleater gets +1/+0 until end of turn. ( can be paid with either or 2 life.)

Iron Myr

Artifact Creature — Myr (1/1)

: Add .

Jhoira's Timebug

Artifact Creature — Insect (1/2)

: Choose target permanent you control or suspended card you own. If that permanent or card has a time counter on it, you may remove a time counter from it or put another time counter on it.

Jhoira's Toolbox

Artifact Creature — Insect (1/1)

: Regenerate target artifact creature.

Jousting Dummy

Artifact Creature — Scarecrow Knight (2/1)

: Jousting Dummy gets +1/+0 until end of turn.

Leaden Myr

Artifact Creature — Myr (1/1)

: Add .

Manakin

Artifact Creature — Construct (1/1)

: Add .

Millikin

Artifact Creature — Construct (0/1)

, Mill a card: Add . (To mill a card, put the top card of your library into your graveyard.)

Mine Worker

Artifact Creature — Assembly-Worker (2/1)

: You gain 1 life. If you control creatures named Power Plant Worker and Tower Worker, you gain 3 life instead.

Monoskelion

Artifact Creature — Construct (1/1)

Monoskelion enters the battlefield with a +1/+1 counter on it.
, Remove a +1/+1 counter from Monoskelion: It deals 1 damage to any target.

Myr Superion

Artifact Creature — Myr (5/6)

Spend only mana produced by creatures to cast this spell.

Mystic Skull // Mystic Monstrosity

Artifact // Artifact Creature — Construct (0/0)

, : Add one mana of any color.
, : Transform Mystic Skull.

Mystic Monstrosity

Lands you control have ": Add one mana of any color."

Nardole, Resourceful Cyborg

Legendary Artifact Creature — Scientist (1/2)

: Add for each counter on Nardole. Spend this mana only to cast noncreature spells.
Undying (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.)
Doctor's companion (You can have two commanders if the other is the Doctor.)

Narnam Cobra

Artifact Creature — Snake (2/1)

: Narnam Cobra gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Omega Myr

Artifact Creature — Myr (1/2)