Legendary creatures don't untap during their controllers' untap steps. When Arena of the Ancients enters the battlefield, tap all legendary creatures.

Equipped creature gets +6/+6. Whenever equipped creature attacks, destroy target permanent. Equip {6}

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

Equipped creature gets +1/+1 for each land you control. Equip legendary creature {3} Equip {7}

Tap two untapped artifacts you control: Untap target artifact.

{T}: Add {C}{C}{C}. {3}, {T}, Sacrifice Dreamstone Hedron: Draw three cards.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Whenever equipped creature attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Equipped creature has double strike. (It deals both first-strike and regular combat damage.) Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Colorless creatures you control get +2/+2. Whenever you tap a permanent for {C}, add an additional {C}. Whenever you cast a colorless spell, you gain 2 life.

Equipped creature gets +2/+2. Equip {3} Ghostfire Blade's equip ability costs {2} less to activate if it targets a colorless creature.

Equipped creature gets +1/+0 for each Equipment attached to it. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

Equipped creature gets +3/+0 and has trample and lifelink. Equip {3}

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

Equipped creature gets +1/+2 and has hexproof. (It can't be the target of spells or abilities your opponents control.) Equip {3}

Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.

Nevinyrral's Disk enters the battlefield tapped. {1}, {T}: Destroy all artifacts, creatures, and enchantments.

{T}: Add {C}. You gain 1 life.

Equipped creature can't be blocked except by Walls. Equip {2}

Equipped creature has deathtouch. Whenever equipped creature deals combat damage to a player, that player loses half their life, rounded up. Equip {3}

{T}: Put a charge counter on Ratchet Bomb. {T}, Sacrifice Ratchet Bomb: Destroy each nonland permanent with mana value equal to the number of charge counters on Ratchet Bomb.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1. Whenever equipped creature deals combat damage to a player, that player loses half their life, rounded up. Equip {3}

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

When Spine of Ish Sah enters the battlefield, destroy target permanent. When Spine of Ish Sah is put into a graveyard from the battlefield, return Spine of Ish Sah to its owner's hand.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

Equipped creature gets +2/+0 and has first strike, vigilance, trample, and haste. Equip {3}

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

{4}, {T}: You may put a historic permanent card from your hand onto the battlefield. (Artifacts, legendaries, and Sagas are historic.)

Equipped creature has nonbasic landwalk. (It can't be blocked as long as defending player controls a nonbasic land.) Equip {2}

{T}: Add {C}. {7}, {T}, Sacrifice Unstable Obelisk: Destroy target permanent.

{1}, {T}: Untap target artifact.

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{T}: Attach target Equipment you control to target creature you control.

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Other artifact creatures you control get +1/+1.

Artifact spells you cast cost {1} less to cast.

{T}: Add {C}. ({C} represents colorless mana.)

Flying Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)

{2}: Regenerate target artifact creature.

Nonartifact spells cost {1} more to cast.

{T}: Add {C}.

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

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

Flying When Pilgrim's Eye enters the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser mana value.

Flash You may cast artifact spells as though they had flash.

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When Solemn Simulacrum dies, you may draw a card.

Flying {2}: Steel Hellkite gets +1/+0 until end of turn. {X}: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by Steel Hellkite this turn. Activate only once each turn.

Defender {3}, {T}: Target creature can't be blocked this turn.

Exile target permanent.

As an additional cost to cast this spell, reveal a colorless creature card from your hand. Exile target creature if its power is less than or equal to the revealed card's power.

{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

{T}: Add {C}. Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Add {C}. {2}, {T}, Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

Cathedral of War enters the battlefield tapped. Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {C}.

{T}: Add {C}. {4}: Put two +1/+1 counters on Crawling Barrens. Then you may have it become a 0/0 Elemental creature until end of turn. It's still a land.

{T}: Add {C}. {1}, {T}, Sacrifice Cryptic Caves: Draw a card. Activate only if you control five or more lands.

Indestructible {T}: Add {C}.

{T}: Add {C}. {4}, {T}, Sacrifice Encroaching Wastes: Destroy target nonbasic land.

{T}: Add {C}. {T}, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

Guildless Commons enters the battlefield tapped. When Guildless Commons enters the battlefield, return a land you control to its owner's hand. {T}: Add {C}{C}.

{T}: Add {C}. {4}, {T}: Remove target attacking or blocking creature from combat.

{T}: Add {C}. {1}, {T}: Put a storage counter on Mage-Ring Network. {T}, Remove any number of storage counters from Mage-Ring Network: Add {C} for each storage counter removed this way.

{T}: Add {C}. {1}, {T}, Sacrifice an artifact: You gain 1 life.

Power Depot enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts. Modular 1

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

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Ruins of Oran-Rief enters the battlefield tapped. {T}: Add {C}. ({C} represents colorless mana.) {T}: Put a +1/+1 counter on target colorless creature that entered the battlefield this turn.

{T}: Add {C}. Whenever you cast a colorless spell with mana value 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.

{T}: Add {C}. ({C} represents colorless mana.) {2}{C}, {T}: Draw a card. Activate only if you have no cards in hand.

{T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands.

{T}: Add {C}. {6}, {T}, Sacrifice Spawning Bed: Create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add {C}."

{T}: Add {C}{C}. Activate only if you control five or more lands.

{T}: Add {C}. {2}, {T}: You gain 1 life for each colorless creature you control.

{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.

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

{T}: Add {C}. {T}, Sacrifice Wasteland: Destroy target nonbasic land.

{T}: Add {C}.

Each player sacrifices all permanents they control that are one or more colors.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. You gain 2 life.

Exile target nonland permanent. Its controller draws a card.

Blast Zone enters the battlefield with a charge counter on it. {T}: Add {C}. {X}{X}, {T}: Put X charge counters on Blast Zone. {3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with mana value equal to the number of charge counters on Blast Zone.

At the beginning of each player's precombat main phase, if Blinkmoth Urn is untapped, that player adds {C} for each artifact they control.

{T}: Add {C}. {3}, {T}: Draw a card. Activate only if you control a creature with power 4 or greater.

Equipped creature gets +10/+10 and loses flying. Equip {8} ({8}: Attach to target creature you control. Equip only as a sorcery.)

Equipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity. Equip commander {3} Equip {5}

Artifacts you control have indestructible. (Effects that say "destroy" don't destroy them. Artifact creatures with indestructible can't be destroyed by damage.)

Indestructible Darksteel Juggernaut's power and toughness are each equal to the number of artifacts you control. Darksteel Juggernaut attacks each combat if able.

Indestructible Equipped creature has indestructible. Equip {2}

{2}, {T}: Draw a card. Activate only if you control three or more lands with the same name.

{T}: Add {C}. {T}: Choose target commander that entered the battlefield this turn. Put a +1/+1 counter on it if it's a creature and a loyalty counter on it if it's a planeswalker.

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life. {T}: Add {C}. {4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

{T}, Sacrifice three artifacts: Search your library for an artifact card, put it onto the battlefield, then shuffle.

This spell costs {X} less to cast, where X is the total mana value of noncreature artifacts you control. Sacrifice two artifacts: Return Metalwork Colossus from your graveyard to your hand.

You may look at the top card of your library any time. You may cast artifact spells and colorless spells from the top of your library. {T}, Pay 1 life: Exile the top card of your library.

{5}, {T}, Exile Perilous Vault: Exile all nonland permanents.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {T}: Add {C}.

Equipped creature gets +1/+1 and has trample and lifelink. {1}: Permanents your opponents control lose hexproof and indestructible until end of turn. Equip {2}

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

Trample {5}: Permanents you control gain indestructible until end of turn. {5}, Exile Soul of New Phyrexia from your graveyard: Permanents you control gain indestructible until end of turn.

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

{T}: Add {C}. {3}, {T}, Pay life equal to the number of colors in your commanders' color identity: Draw a card.