Whenever you attack, you may sacrifice another creature or an artifact. If you do, create a 4/1 black Skeleton creature token with menace that's tapped and attacking. (It can't be blocked except by two or more creatures.) Choose a Background (You can have a Background as a second commander.)

When Prized Statue enters the battlefield or is put into a graveyard from the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Whenever a creature enters the battlefield under your control, Impact Tremors deals 1 damage to each opponent.

Attacking creatures get +X/+0 until end of turn, where X is the number of players being attacked. Draw a card.

When Bitter Reunion enters the battlefield, you may discard a card. If you do, draw two cards. {1}, Sacrifice Bitter Reunion: Creatures you control gain haste until end of turn.

{1}, Sacrifice a creature: Exile the top card of your library. You may play that card this turn. (You still pay its costs. You can play a land this way only if you have an available land play remaining.)

When Experimental Synthesizer enters or leaves the battlefield, exile the top card of your library. Until end of turn, you may play that card. {2}{R}, Sacrifice Experimental Synthesizer: Create a 2/2 white Samurai creature token with vigilance. Activate only as a sorcery.

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When Goblin Matron enters the battlefield, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.

When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield, draw a card.

When Mycosynth Wellspring enters the battlefield or is put into a graveyard from the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Choose one or both — • Return target creature card from your graveyard to your hand. • Return target artifact card from your graveyard to your hand.

As an additional cost to cast this spell, discard a card. Draw two cards.

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

For Mirrodin! (When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.) Equipped creature gets +1/-1. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

{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.

Create two 1/1 white Clown Robot artifact creature tokens, then roll a six-sided die. If the result is equal to or less than the number of Robots you control, create a 1/1 white Clown Robot artifact creature token.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Crawling Chorus dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

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. Equip {2}

Create a 1/1 red Dinosaur creature token with haste and a 1/1 white Human Soldier creature token.

When Garrison Cat dies, create a 1/1 white Human Soldier creature token.

Create two 1/1 white Human creature tokens. Fateful hour — If you have 5 or less life, create five of those tokens instead.

First strike When Grim Initiate dies, amass Zombies 1. (Put a +1/+1 counter 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.)

When Hunted Witness dies, create a 1/1 white Soldier creature token with lifelink.

{R}, Sacrifice Implement of Combustion: It deals 1 damage to target player or planeswalker. When Implement of Combustion is put into a graveyard from the battlefield, draw a card.

{W}, Sacrifice Implement of Improvement: You gain 2 life. When Implement of Improvement is put into a graveyard from the battlefield, draw a card.

When Impulsive Pilferer dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") Encore {3}{R} ({3}{R}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Create two 1/1 red Goblin creature tokens.

As an additional cost to cast this spell, sacrifice an artifact. Create three 1/1 red Goblin creature tokens.

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When Mogg War Marshal enters the battlefield or dies, create a 1/1 red Goblin creature token.

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

When Nimblewright Schematic enters the battlefield or is put into a graveyard from the battlefield, create a 1/1 colorless Construct artifact creature token.

Create two 1/1 white Soldier creature tokens.

Create two 1/1 white Human Soldier creature tokens. Humans you control gain haste until end of turn.

When Spirited Companion enters the battlefield, draw a card.

When Thraben Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

When Voldaren Epicure enters the battlefield, it deals 1 damage to each opponent. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

{T}: Add {W}.

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

{T}: Add {R}.

Lorehold Campus enters the battlefield tapped. {T}: Add {R} or {W}. {4}, {T}: Scry 1.

({T}: Add {R}.)

Path of Ancestry enters the battlefield tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {W}.)

Rustvale Bridge enters the battlefield tapped. Indestructible {T}: Add {R} or {W}.

Sacrifice Benevolent Bodyguard: Target creature you control gains protection from the color of your choice until end of turn.

Target permanent gains hexproof and indestructible until end of turn. If it's an artifact creature, it gets +2/+2 until end of turn.

Sacrifice a Goblin: Regenerate target creature.

Sacrifice Kami of False Hope: Prevent all combat damage that would be dealt this turn.

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

Return target artifact or creature card with mana value 3 or less from your graveyard to the battlefield. If a creature enters the battlefield this way, it enters with an additional +1/+1 counter on it.

As an additional cost to cast this spell, sacrifice a permanent. Exile target artifact, creature, or enchantment.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

Flash {1}, Sacrifice Cathar Commando: Destroy target artifact or enchantment.

As an additional cost to cast this spell, sacrifice a creature. Collateral Damage deals 3 damage to any target.

Changeling (This card is every creature type.) Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.

Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn.

Lightning Bolt deals 3 damage to any target.

{1}, Sacrifice an artifact or creature: Makeshift Munitions deals 1 damage to any target.

When Perilous Myr dies, it deals 2 damage to any target.

As an additional cost to cast this spell, sacrifice a creature. Reckless Abandon deals 4 damage to any target.

This spell costs {3} less to cast if you control a creature with menace. Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

({W/P} can be paid with either {W} or 2 life.) Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.

When Cogworker's Puzzleknot enters the battlefield, create a 1/1 colorless Servo artifact creature token. {1}{W}, Sacrifice Cogworker's Puzzleknot: Create a 1/1 colorless Servo artifact creature token.

Creatures you control gain trample until end of turn. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.) Draw a card.

Create two 1/1 red Goblin creature tokens.

Sacrifice a creature: Regenerate target creature.

As an additional cost to cast this spell, sacrifice a creature. Fling deals damage equal to the sacrificed creature's power to any target.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) {1}{R}: Creatures you control named Genasi Enforcers get +1/+0 until end of turn.

When Goblin Instigator enters the battlefield, create a 1/1 red Goblin creature token.

Target creature you control gains protection from the color of your choice until end of turn. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything of that color.) Scry 1.

As an additional cost to cast this spell, sacrifice a creature. Add {R}{R}{R}.

When Martyr of Dusk dies, create a 1/1 white Vampire creature token with lifelink.

Enchant creature Enchanted creature can't attack or block.

Prevent all damage that sources of the color of your choice would deal this turn. Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, discard a card. Draw two cards and create a 1/1 white Human Soldier creature token.

If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost. Creatures you control get +1/+1 until end of turn.

{W}, Pay 2 life: The next time a source of your choice would deal damage to you this turn, prevent that damage.