When Arbalest Engineers enters the battlefield, choose one --

• Arbalest Engineers deals 1 damage to any target.

• Put a +1/+1 counter on target creature. It gains trample and haste until end of turn.

• Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Arcane Sanctum enters the battlefield tapped.

{T}: Add {W}, {U}, or {B}.

{T}: Add one mana of any color in your commander's color identity.

When Argothian Opportunist enters the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Deathtouch

Whenever Ashnod, Flesh Mechanist attacks, you may sacrifice another creature. If you do, create a tapped Powerstone token.

{5}, Exile a creature card from your graveyard: Create a tapped 3/3 colorless Zombie artifact creature token.

Creatures you control have "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell."

Whenever you cast an artifact spell with mana value 6 or greater, draw a card.

Blossoming Sands enters the battlefield tapped.

When Blossoming Sands enters the battlefield, you gain 1 life.

{T}: Add {G} or {W}.

Prototype {3}{G} -- 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

When Boulderbranch Golem enters the battlefield, you gain life equal to its power.

{T}: Add {C}.

{T}: Add {G} or {W}. Brushland deals 1 damage to you.

{T}: Add {C}.

{T}: Add {W} or {B}. Caves of Koilos deals 1 damage to you.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

{T}, Tap an untapped artifact or creature you control: Add one mana of any color.

Trample

When you cast this spell and whenever Cityscape Leveler attacks, destroy up to one target nonland permanent. Its controller creates a tapped Powerstone token.

Unearth {8}

Clay Revenant enters the battlefield tapped.

{2}{B}: Return Clay Revenant from your graveyard to your hand.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.

Spells you cast of the chosen type cost {1} less to cast.

You can't cast permanent spells.

{4}, {T}: Add {W}{U}{B}{R}{G}. When you cast your next spell this turn, exile cards from the top of your library until you exile an instant or sorcery card with lesser mana value. Until end of turn, you may cast that card without paying its mana cost. Put each other card exiled this way on the bottom of your library in a random order.

{2}, Sacrifice Combat Courier: Draw a card.

Unearth {U} ({U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

{T}: Add one mana of any color in your commander's color identity.

Prototype {2}{G} -- 1/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

{T}: Add an amount of {G} equal to Cradle Clearcutter's power.

You may play lands from your graveyard.

Crumbling Necropolis enters the battlefield tapped.

{T}: Add {U}, {B}, or {R}.

When Crystal Grotto enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{T}: Add {C}.

{1}, {T}: Add one mana of any color.

Destroy target artifact or enchantment.

Dismal Backwater enters the battlefield tapped.

When Dismal Backwater enters the battlefield, you gain 1 life.

{T}: Add {U} or {B}.

Door to Nothingness enters the battlefield tapped.

{W}{W}{U}{U}{B}{B}{R}{R}{G}{G}, {T}, Sacrifice Door to Nothingness: Target player loses the game.

Target opponent reveals their hand. You choose an artifact or creature card from it, then choose an artifact or creature card from their graveyard. Exile the chosen cards.

Return target artifact or creature card from your graveyard to your hand. Create a 1/1 colorless Soldier artifact creature token.

When Evangel of Synthesis enters the battlefield, draw a card, then discard a card.

As long as you've drawn two or more cards this turn, Evangel of Synthesis gets +1/+0 and has menace.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Create three tapped Powerstone tokens. You gain 3 life. (The tokens are artifacts with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

({T}: Add {G}.)

({T}: Add {G}.)

Look at the top five cards of your library. You may reveal any number of artifact cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

As Fortified Beachhead enters the battlefield, you may reveal a Soldier card from your hand. Fortified Beachhead enters the battlefield tapped unless you revealed a Soldier card this way or you control a Soldier.

{T}: Add {W} or {U}.

{5}, {T}: Soldiers you control get +1/+1 until end of turn.

Prototype {1}{B} -- 1/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Deathtouch

{T}: Add {C}.

{1}, {T}: Add one mana of any color.

{4}, {T}: Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

When Haywire Mite dies, you gain 2 life.

{G}, Sacrifice Haywire Mite: Exile target noncreature artifact or noncreature enchantment.

Menace

At the beginning of your upkeep, tap Heavyweight Demolisher unless you pay {3}.

Unearth {6}{R}{R} ({6}{R}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

({T}: Add {U}.)

({T}: Add {U}.)

{2}, {T}: Draw a card, then discard a card.

Jungle Shrine enters the battlefield tapped.

{T}: Add {R}, {G}, or {W}.

When Junkyard Genius enters the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

{1}{B}{R}, Sacrifice another creature or artifact: Until end of turn, other creatures you control get +1/+0 and gain menace and haste.

Choose two --

• Create a 2/2 colorless Construct artifact creature token.

• Put a +1/+1 counter on a creature you control. It gains double strike until end of turn.

• Search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.

• You gain 2 life and scry 2.

Flash

Flying

You may cast colorless spells and artifact spells as though they had flash.

Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than Liberator, Urza's Battlethopter's power, put a +1/+1 counter on Liberator.

{T}: Add {C}.

{T}: Add {B} or {G}. Llanowar Wastes deals 1 damage to you.

Target artifact or creature gains hexproof and indestructible until end of turn. Scry 1.

Whenever Loran, Disciple of History or another legendary creature enters the battlefield under your control, return target artifact card from your graveyard to your hand.

{X}, {T}, Sacrifice Mask of the Jadecrafter: Create an X/X colorless Golem artifact creature token. Activate only as a sorcery.

Unearth {2}{G} ({2}{G}: Return this card from your graveyard to the battlefield. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

{T}: You gain 1 life. If you control creatures named Power Plant Worker and Tower Worker, you gain 3 life instead.

Haste

{1}, {T}, Discard a card: Draw a card.

Whenever you discard one or more artifact cards, add {R}{R}. This ability triggers only once each turn.

Permanents you control have "Ward--Sacrifice a permanent."

Each artifact card in your graveyard has unearth {1}{B}{R}. ({1}{B}{R}: Return the card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

({T}: Add {R}.)

({T}: Add {R}.)

Mystic Monastery enters the battlefield tapped.

{T}: Add {U}, {R}, or {W}.

Nomad Outpost enters the battlefield tapped.

{T}: Add {R}, {W}, or {B}.

Flying

You may play lands from your graveyard.

Unearth {G}{G} ({G}{G}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Vigilance

Whenever an artifact enters the battlefield under your control, Phalanx Vanguard gets +1/+0 until end of turn.

({T}: Add {W}.)

({T}: Add {W}.)

{3}: Power Plant Worker gets +2/+2 until end of turn. If you control creatures named Mine Worker and Tower Worker, put two +1/+1 counters on Power Plant Worker instead. Activate only once each turn.

When Powerstone Engineer dies, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Quandrix Campus enters the battlefield tapped.

{T}: Add {G} or {U}.

{4}, {T}: Scry 1.

You have no maximum hand size.

{T}: Add {C}.

Prototype {3}{G}{G} -- 3/5 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Reach, trample

+1: Scry 1. You may tap an untapped artifact you control. If you do, draw a card.

-2: Create two 1/1 colorless Thopter artifact creature tokens with flying. They gain haste until end of turn.

-4: You get an emblem with "Artifact creatures you control get +1/+1" and "Artifact spells you cast cost {1} less to cast."

Sandsteppe Citadel enters the battlefield tapped.

{T}: Add {W}, {B}, or {G}.

Trample

Whenever a land enters the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Savage Lands enters the battlefield tapped.

{T}: Add {B}, {R}, or {G}.

Scoured Barrens enters the battlefield tapped.

When Scoured Barrens enters the battlefield, you gain 1 life.

{T}: Add {W} or {B}.

When Scrapwork Mutt enters the battlefield, you may discard a card. If you do, draw a card.

Unearth {1}{R} ({1}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Seaside Citadel enters the battlefield tapped.

{T}: Add {G}, {W}, or {U}.

Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn. Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Prototype {3}{R}{R} -- 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Trample, haste

When Skitterbeam Battalion enters the battlefield, if you cast it, create two tokens that are copies of it.

Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

{T}: Add {C}{C}.

When Soul-Guide Lantern enters the battlefield, exile target card from a graveyard.

{T}, Sacrifice Soul-Guide Lantern: Exile each opponent's graveyard.

{1}, {T}, Sacrifice Soul-Guide Lantern: Draw a card.

Protection from multicolored (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything multicolored.)

Whenever a nonbasic land enters the battlefield under an opponent's control, you gain 1 life.

As an additional cost to cast this spell, sacrifice an artifact.

Create two tapped Powerstone tokens. If the sacrificed artifact was legendary, draw a card. (The tokens are artifacts with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Draw two cards, then discard a card. Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

When Stone Retrieval Unit enters the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

({T}: Add {B}.)

({T}: Add {B}.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Flying, haste

When Swiftgear Drake enters the battlefield, put up to one target card from a graveyard on the bottom of its owner's library.

+1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card.

-2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step.

-7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs."

When The Mightstone and Weakstone enters the battlefield, choose one --

• Draw two cards.

• Target creature gets -5/-5 until end of turn.

{T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells.

(Melds with Urza, Lord Protector.)

Reach

When Thran Spider enters the battlefield, you and target opponent each create a tapped Powerstone token.

{7}: Look at the top four cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

When Tomakul Scrapsmith enters the battlefield, mill three cards. You may put an artifact card from among the cards milled this way into your hand. If you don't, put a +1/+1 counter on Tomakul Scrapsmith. (To mill a card, put the top card of your library into your graveyard.)

Reach

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

Tranquil Cove enters the battlefield tapped.

When Tranquil Cove enters the battlefield, you gain 1 life.

{T}: Add {W} or {U}.

Draw a card, then you gain life equal to the number of cards in your hand.

Untap all artifacts you control during each other player's untap step.

Artifact, instant, and sorcery spells you cast cost {1} less to cast.

{7}: If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone, exile them, then meld them into Urza, Planeswalker. Activate only as a sorcery.

Vigilance

{1}, {T}: Draw a card, then discard a card.

Whenever you discard one or more artifact cards, create a tapped Powerstone token. This ability triggers only once each turn. (The token is an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Artifact creatures you control get +2/+2.

{6}: Create a token that's a copy of target artifact you control, except it's a 1/1 Soldier creature in addition to its other types.

At the beginning of your upkeep, exile the top card of your library. You may play that card this turn.

At the beginning of your end step, if you didn't play a card from exile this turn, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Wind-Scarred Crag enters the battlefield tapped.

When Wind-Scarred Crag enters the battlefield, you gain 1 life.

{T}: Add {R} or {W}.

Whenever Yotian Frontliner attacks, another target creature you control gets +1/+1 until end of turn.

Unearth {W} ({W}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)