Cathodion

Artifact Creature — Construct (3/3)

When Cathodion dies, add .

Chief of the Foundry

Artifact Creature — Construct (2/3)

Other artifact creatures you control get +1/+1.

Clay Golem

Artifact Creature — Golem (4/4)

, Roll a d8: Monstrosity X, where X is the result. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
Berserk — When Clay Golem becomes monstrous, destroy target permanent.

Clay Statue

Artifact Creature — Golem (3/1)

: Regenerate Clay Statue.

Clockwork Gnomes

Artifact Creature — Gnome (2/2)

, : Regenerate target artifact creature.

Cobalt Golem

Artifact Creature — Golem (2/3)

: Cobalt Golem gains flying until end of turn.

Cogwork Librarian

Artifact Creature — Construct (3/3)

Draft Cogwork Librarian face up.
As you draft a card, you may draft an additional card from that booster pack. If you do, put Cogwork Librarian into that booster pack.

Cogwork Spy

Artifact Creature — Bird Construct (2/1)

Reveal Cogwork Spy as you draft it. You may look at the next card drafted from this booster pack.
Flying

Coiled Tinviper

Artifact Creature — Snake (2/1)

First strike

Copper Myr

Artifact Creature — Myr (1/1)

: Add .

Coretapper

Artifact Creature — Myr (1/1)

: Put a charge counter on target artifact.
Sacrifice Coretapper: Put two charge counters on target artifact.

Crashing Drawbridge

Artifact Creature — Wall (0/4)

Defender
: Creatures you control gain haste until end of turn.

Cryptothrall

Artifact Creature — Construct (3/3)

Protector — Other artifact creatures you control have hexproof.

Curious Killbot

Artifact Creature — Killbot (2/1)

Delighted Killbot

Artifact Creature — Killbot (2/1)

Despondent Killbot

Artifact Creature — Killbot (2/1)

Diamond Lion

Artifact Creature — Cat (2/2)

, Discard your hand, Sacrifice Diamond Lion: Add three mana of any one color. Activate only as an instant.

Digsite Conservator

Artifact Creature — Gnome (2/1)

Sacrifice Digsite Conservator: Exile up to four target cards from a single graveyard. Activate only as a sorcery.
When Digsite Conservator dies, you may pay . If you do, discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Dragon Engine

Artifact Creature — Construct (1/3)

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

Dross Ripper

Artifact Creature — Phyrexian Dog (3/3)

: Dross Ripper gets +1/+1 until end of turn.