Choose a creature type. Create a 1/1 red creature token with haste of the chosen type.
Choose a creature type. Create a 1/1 green creature token with trample of the chosen type.

Target opponent discards their hand, then draws seven cards. You discard your hand, then exile the top seven cards of that player's library. You may play those cards as long as they remain exiled, and mana of any type can be spent to cast them.

Vigilance
Whenever you cast a spell from anywhere other than your hand, put a +1/+1 counter on Shepherd of Steel.
When Shepherd of Steel dies, put its counters on target creature you control.

Exile the top two cards of target opponent's library. You may play them until the end of your next turn, and mana of any type can be spent to cast them.

Trample, haste
Solidarity
At the beginning of your end step, sacrifice Vukoroq Defector unless you sacrifice a token named Solidarity.

{2}, {T}, Pay 1 life: Target permanent becomes an artifact in addition to its other types until end of turn.
Pay 1 life, Sacrifice Welding Rig: Target artifact gains indestructible until end of turn.

Workshop Helper enters with a +1/+1 counter on it.
{T}: Move a counter from target creature you control onto another target creature. Activate only as a sorcery.

As an additional cost to cast this spell, tap four untapped artifacts and/or lands you control.
{T}: Each opponent loses 1 life and you gain 1 life.
Tap four untapped artifacts and/or lands you control: Untap Altar of Chrome.

Archaic Obelisk enters with a charge counter on it.
{T}: Mill two cards, then you may remove a charge counter from Archaic Obelisk. If you do, return a card milled this way to your hand.

{1}, Sacrifice Auto Sifter: Search your library for a basic land card, reveal it, put it into your hand, the shuffle.

When Cosmic Colossus enters, if you cast it from your hand, cast a copy of target card in exile without paying its mana cost unless an opponent exiles two nonland permanents they control.

Whenever you play a card with mana value equal to the number of charge counters on Gilded Font, put a charge counter on it.
{2}, Sacrifice Gilded Font: You draw X cards and gain twice X life, where X is the number of charge counters on Gilded Font.

At the beginning of combat on your turn, put a +1/+1 counter on equipped creature.
Equipped creature has flying as long as it has two or more +1/+1 counters on it.
Equipped creature has double strike as long as it has four or more +1/+1 counters on it.
Equip {2}

Holo-Map enters with two charge counters on it.
{1}, {T}, Remove a charge counter from Holo-Map: Target creature can't be blocked this turn. Scry 2.

{T}, Sacrifice Leyshard: Draw a card. Add one mana of any type.

{2}, {T}: Exile target creature you control, then reveal the top card of your library. If the revealed card is a creature card, put it onto the battlefield. Otherwise, return the exiled card to the battlefield under its owner's control.

Matter Harvester has protection from mana values less than the number of artifacts you control.
Whenever a nonland permanent you don't control leaves the battlefield, create a 1/1 colorless Cyborg artifact creature token.

Trample
Mercurial Wright gets +1/+0 for each other artifact you control.
{2}: Target permanent becomes an artifact in addition to its other types until end of turn.

Whenever Omnoid Destroyer or another artifact you control enters, artifact creatures you control gain deathtouch until end of turn.

When Plasma Armory enters or leaves the battlefield, create a Weapon token.
{2}, Sacrifice Plasma Armory: Draw a card.

Each creature you control gets +2/+1 as long as you control two or more other creatures with the same name as it.
{3}{C}, {T}: Create a token that's a copy of target creature you control.

{T}: Add one mana of any type.
{T}, Sacrifice two permanents named Reactor Sphere: Draw three cards.

Flying
Whenever Seeker Orbs becomes tapped, scry 1.

Whenever one or more creature cards are put into your graveyard from anywhere, you may choose one and pay {X}, where X is the chosen card's mana value. If you do, create a tapped token that's a copy of it.
{T}: Target player mills two cards.

Whenever a permanent you control enters, you may put a living counter on it.
Permanents with living counters on them are 2/2 artifact creatures in addition to their other types.