Basalt Monolith doesn't untap during your untap step. {T}: Add {C}{C}{C}. {3}: Untap Basalt Monolith.

Creatures attacking you get -1/-0. At the beginning of each end step, if you were dealt 4 or more damage this turn, exile Boarded Window.

{X}: Chimeric Staff becomes an X/X Construct artifact creature until end of turn.

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color. When Chromatic Star is put into a graveyard from the battlefield, draw a card.

Players have no maximum hand size. {X}{X}, {T}: Each player draws X cards. {2}{U}, {T}: Each opponent mills cards equal to the number of cards in their hand.

{T}: Add three mana of any one color.

When Glass Casket enters the battlefield, exile target creature an opponent controls with mana value 3 or less until Glass Casket leaves the battlefield.

Whenever a creature you control dies, put two eyeball counters on Jar of Eyeballs. {3}, {T}, Remove all eyeball counters from Jar of Eyeballs: Look at the top X cards of your library, where X is the number of eyeball counters removed this way. Put one of them into your hand and the rest on the bottom of your library in any order.

{T}, Discard a card: Up to one target creature can't be blocked this turn. Whenever Key to the City becomes untapped, you may pay {2}. If you do, draw a card.

Flying Whenever you cast a noncreature spell, put a +1/+1 counter on Levitating Statue. {2}: Levitating Statue becomes a 1/1 Construct artifact creature until end of turn.

Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.

{1}, {T}: Untap another target artifact. {3}, {T}: Target creature can't be blocked this turn.

{T}, Put a page counter on Mazemind Tome: Scry 1. {2}, {T}, Put a page counter on Mazemind Tome: Draw a card. When there are four or more page counters on Mazemind Tome, exile it. If you do, you gain 4 life.

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

{T}: Add {U}.

{2}, {T}: Create a 0/1 colorless Pest artifact creature token.

{4}, {T}: You may put a creature card from your hand onto the battlefield.

Whenever an artifact or enchantment is put into your graveyard from the battlefield, you gain 1 life.

Whenever Silent Submersible deals combat damage to a player or planeswalker, draw a card. Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Sky Diamond enters the battlefield tapped. {T}: Add {U}.

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.")

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.)

({T}: Add {U}.)

Flying When Arcanist's Owl enters the battlefield, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

{1}: Until end of turn, Argivian Avenger gets -1/-1 and gains your choice of flying, vigilance, deathtouch, or haste.

Prototype {1}{W} — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Vigilance {1}, {T}: Put a +1/+1 counter on target Assembly-Worker you control.

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

When Cathodion dies, add {C}{C}{C}.

Clockwork Beast enters the battlefield with seven +1/+0 counters on it. At end of combat, if Clockwork Beast attacked or blocked this combat, remove a +1/+0 counter from it. {X}, {T}: Put up to X +1/+0 counters on Clockwork Beast. This ability can't cause the total number of +1/+0 counters on Clockwork Beast to be greater than seven. Activate only during your upkeep.

{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.)

Prototype {2}{W} — 1/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Double strike When Combat Thresher enters the battlefield, draw a card.

When Corridor Monitor enters the battlefield, untap target artifact or creature you control.

{2}: Regenerate target artifact creature.

{T}: Untap another target permanent you control. {T}: Tap target permanent. Activate only if you control eight or more lands.

{1}{U}, {T}: Untap target artifact an opponent controls and gain control of it until end of turn. It gains haste until end of turn. When you lose control of the artifact, tap it.

Trample When Marut enters the battlefield, if mana from a Treasure was spent to cast it, create a Treasure token for each mana from a Treasure spent to cast it. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flying

Trample When Phyrexian Dreadnought enters the battlefield, sacrifice it unless you sacrifice any number of creatures with total power 12 or greater.

You may cast Dragon spells and artifact spells as though they had flash. Choose a Background (You can have a Background as a second commander.)

{T}: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts. {U}, {T}: Search your library for a card named Heart-Piercer Bow or Vial of Dragonfire, reveal it, put it into your hand, then shuffle.

Sacrifice Salvager of Ruin: Choose target permanent card in your graveyard that was put there from the battlefield this turn. Return it to your hand.

Shambling Suit's power is equal to the number of artifacts and/or enchantments you control.

Vigilance Ward {4} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {4}.) When Su-Chi Cave Guard dies, add eight {C}. Until end of turn, you don't lose this mana as steps and phases end.

You may have Copy Artifact enter the battlefield as a copy of any artifact on the battlefield, except it's an enchantment in addition to its other types.

This spell can't be countered. Draw two cards, then amass Zombies X, where X is the number of cards in your hand. (Put X +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Choose one — • Create two 3/3 colorless Golem artifact creature tokens. • Choose target artifact you control. Each other artifact you control becomes a copy of that artifact until end of turn.

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

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

({T}: Add {U}.) Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands. When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.

When Obscura Storefront enters the battlefield, sacrifice it. When you do, search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

You have no maximum hand size. {T}: Add {C}.

{T}: Add {C}. {X}{X}, {T}, Sacrifice Treasure Vault: Create X Treasure tokens.

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

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

Prevent all noncombat damage that would be dealt to you and other permanents you control. −2: Exile target creature with power 4 or greater.

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.

Create four 1/1 colorless Soldier artifact creature tokens.

If X is 1, scry 1, then draw a card. If X is 2, you may choose a player. They return a creature they control to its owner's hand. If X is 3, create a 4/4 blue and red Elemental creature token. If X is 4 or more, do all of the above.