Kozilek's Pathfinder

{C}: Target creature can't block this creature this turn. ({C} represents colorless mana.)

Hedron Crawler

{T}: Add {C}. ({C} represents colorless mana.)

Oasis Gardener

When this creature enters, you gain 2 life.
{T}: Add one mana of any color.

Ornithopter of Paradise

Eldrazi Devastator

Anvilwrought Raptor

Flying
First strike (This creature deals combat damage before creatures without first strike.)

Warden of Geometries

Vigilance
{T}: Add {C}. ({C} represents colorless mana.)

Foundry Inspector

Artifact spells you cast cost {1} less to cast.

Ulamog's Crusher

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)
This creature attacks each combat if able.

Tower Worker

Reach
{T}: Add {C}. If you control creatures named Mine Worker and Power Plant Worker, add {C}{C}{C} instead.

Alloy Myr

Snapsail Glider

Metalcraft — This creature has flying as long as you control three or more artifacts.

Workshop Assistant

When this creature dies, return another target artifact card from your graveyard to your hand.

Marching Duodrone

Whenever this creature attacks, each player creates a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Arcbound Hybrid

Haste
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Opaline Unicorn

Rug of Smothering

Flying
Whenever a player casts a spell, they lose 1 life for each spell they've cast this turn.

Hand of Emrakul

You may sacrifice four Eldrazi Spawn rather than pay this spell's mana cost.
Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)

Scuttlemutt

{T}: Add one mana of any color.
{T}: Target creature becomes the color or colors of your choice until end of turn.

Steel Wall

Cathodion

Ruin Processor

When you cast this spell, you may put a card an opponent owns from exile into that player's graveyard. If you do, you gain 5 life.

Arcbound Crusher

Trample
Whenever another artifact enters, put a +1/+1 counter on this creature.
Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Clockwork Gnomes

{3}, {T}: Regenerate target artifact creature.

Manakin

Clockwork Fox

When this creature leaves the battlefield, you draw two cards and each opponent draws a card.

It That Heralds the End

Colorless spells you cast with mana value 7 or greater cost {1} less to cast.
Other colorless creatures you control get +1/+1.