As long as you control an artifact, Aerial Engineer gets +2/+0 and has flying.

Creature tokens you control have haste.

At the beginning of combat on your turn, create a 2/1 blue Phyrexian Myr artifact creature token. Then you may choose a token you control. If you do, each other token you control becomes a copy of that token.

When Contagion Engine enters, put a -1/-1 counter on each creature target player controls.

, : Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

Whenever you cast an artifact spell, you may pay . If you do, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

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

Choose one —

• Target creature gets +5/+5 and gains trample until end of turn.

• Creatures you control get +2/+2 and gain vigilance until end of turn.

Flying

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

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

1/3

, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of those cards into your hand and the rest into your graveyard.

Partner (You can have two commanders if both have partner.)

When Goblin Engineer enters, you may search your library for an artifact card, put it into your graveyard, then shuffle.

, , Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

, , Sacrifice an artifact: Return target artifact you control to its owner's hand.

Vigilance

At the beginning of your end step, untap each other artifact creature you control.

, : Create a 5/5 colorless Vehicle artifact token named Zeppelin with flying and crew 3. (It has "Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.")

: Mantis Engine gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

: Mantis Engine gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

, : Create a 0/1 colorless Pest artifact creature token.

Double strike

When Phyrexian Dragon Engine enters from your graveyard, you may discard your hand. If you do, draw three cards.

Unearth

(Melds with Mishra, Claimed by Gix.)

Reach, lifelink

Whenever Polukranos, Engine of Ruin or another nontoken Hydra you control dies, create a 3/3 green and white Phyrexian Hydra creature token with reach and a 3/3 green and white Phyrexian Hydra creature token with lifelink.

Flying

Whenever you cast a spell, put a +1/+1 counter on Ramos for each of that spell's colors.

Remove five +1/+1 counters from Ramos: Add . Activate only once each turn.

Scuttling Doom Engine can't be blocked by creatures with power 2 or less.

When Scuttling Doom Engine dies, it deals 6 damage to target opponent or planeswalker.

, : Draw two cards, then discard a card. Create a 1/1 colorless Pilot creature token with "This creature crews Vehicles as though its power were 2 greater."

Crew 8 (Tap any number of creatures you control with total power 8 or more: This Vehicle becomes an artifact creature until end of turn.)

Shorikai, Genesis Engine can be your commander.

Vehicles you control become artifact creatures until end of turn. Creatures you control get +2/+0 until end of turn.

When Thopter Engineer enters, create a 1/1 colorless Thopter artifact creature token with flying.

Artifact creatures you control have haste. (They can attack and as soon as they come under your control.)

Trample

: Urza's Engine gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

: Attacking creatures banded with Urza's Engine gain trample until end of turn.

At the beginning of combat on your turn, target artifact creature you control gets +2/+0 until end of turn.

Deathtouch, lifelink

When Wurmcoil Engine dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.