Phyrexia: All Will Be One

Chrome Prowler | Artifact Creature | Phyrexian Cat | Flash When Chrome Prowler enters the battlefield, tap target creature an opponent controls. | Maxime Minard

Escaped Experiment | Artifact Creature | Phyrexian Beast | Whenever Escaped Experiment attacks, target creature an opponent controls gets -X/-0 until end of turn, where X is the number of artifacts you control. | Billy Christian

Malcator's Watcher | Artifact Creature | Phyrexian Drone | Flying, vigilance When Malcator's Watcher dies, draw a card. | Jason A. Engle

Transplant Theorist | Artifact Creature | Phyrexian Artificer | Whenever Transplant Theorist or another artifact enters the battlefield under your control, you may draw a card. If you do, discard a card. {2}: Put target card from your graveyard on the bottom of your library. | Xavier Ribeiro

Unctus, Grand Metatect | Legendary Artifact Creature | Phyrexian Vedalken | Other blue creatures you control have "Whenever this creature becomes tapped, draw a card, then discard a card." Other artifact creatures you control get +1/+1. {U/P}: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors and types. Activate only as a sorcery. ({U/P} can be paid with either {U} or {2} life.) | Andrew Mar

Cephalopod Sentry | Artifact Creature | Phyrexian Squid | Flying Cephalopod Sentry's power is equal to the number of artifacts you control. | Mathias Kollros