Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

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

You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost. {T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

Imprint — When Chrome Mox enters the battlefield, you may exile a nonartifact, nonland card from your hand. {T}: Add one mana of any of the exiled card's colors.

Spells cost {1} less to cast.

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

{1}, {T}: Put a charge counter on Jeweled Amulet. Note the type of mana spent to pay this activation cost. Activate only if there are no charge counters on Jeweled Amulet. {T}, Remove a charge counter from Jeweled Amulet: Add one mana of Jeweled Amulet's last noted type.

{T}, Sacrifice Lotus Petal: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.

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}.

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

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

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

{B}, Pay 1 life: Add one mana of any color.

Sacrifice Blood Pet: Add {B}.

Carrion Feeder can't block. Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.

{1}{B}, {T}: Exile two target cards from an opponent's graveyard. Deadeye Tracker explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

When Drainpipe Vermin dies, you may pay {B}. If you do, target player discards a card.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever a Human deals damage to you, destroy it. Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Flash You control your opponents while they're searching their libraries. While an opponent is searching their library, they exile each card they find. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast them.

Discard a card, Sacrifice Overeager Apprentice: Add {B}{B}{B}.

Flying Discard a card: Add {B}.

Flying {B}, Pay 2 life: Target creature gets -1/-1 until end of turn. Whenever you lose life, draw that many cards. (Damage causes loss of life.)

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Whenever you pay life, put that many blood counters on Font of Agonies. {1}{B}, Remove four blood counters from Font of Agonies: Destroy target creature.

Whenever an opponent casts a green spell, you may pay {B}{B}. If you do, look at that player's hand and choose a card from it. The player discards that card. {B}{B}: Return Leshrac's Sigil to its owner's hand.

Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. You may repeat this process any number of times.

Target creature becomes black and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.) Draw a card.

Add {B}{B}{B}. Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.

Exile target card from a graveyard. If it was a creature card, you gain 3 life. Otherwise, you draw a card. Escape—{3}{B}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Exile target card from a graveyard. Draw a card.

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

Add {B}{B}{B}.

If you control a commander, you may cast this spell without paying its mana cost. Exile target creature.

This spell costs {X} less to cast, where X is your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.) Destroy target creature.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Until end of turn, lands you control gain "Sacrifice this land: Add {B}."

As an additional cost to cast this spell, sacrifice a creature. Add an amount of {B} equal to the sacrificed creature's mana value.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost. Destroy target nonblack creature. It can't be regenerated.

You draw two cards and you lose 2 life.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Until end of turn, creatures target player controls lose all abilities and have base power and toughness 0/2.

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Barren Moor enters the battlefield tapped. {T}: Add {B}. Cycling {B} ({B}, Discard this card: Draw a card.)

{T}: Add {C}. {T}, Sacrifice Crystal Vein: Add {C}{C}.

If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand. {T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

Peat Bog enters the battlefield tapped with two depletion counters on it. {T}, Remove a depletion counter from Peat Bog: Add {B}{B}. If there are no depletion counters on Peat Bog, sacrifice it.

({T}: Add {B}.)

{T}: Add {C}. {T}, Sacrifice Strip Mine: Destroy target land.

({2/B} can be paid with any two mana or with {B}. This card's mana value is 6.) Search your library for a card with mana value less than or equal to the number of lands you control, reveal it, put it into your hand, then shuffle.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

Search your library for a card, put that card into your hand, then shuffle. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, add {B}{B}{B}.

Search your library for a card, put that card into your hand, then shuffle.

As an additional cost to cast this spell, sacrifice a creature. Search your library for a card, put that card into your hand, then shuffle.

Search your library for a card, put that card into your hand, then shuffle.

Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle. Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Draw four cards. You lose half your life, rounded up.

Target player reveals their hand. You choose a nonland card from it with mana value 3 or less. That player discards that card.

Choose one — • Search your library for a card, put it into your hand, then shuffle. • Put a card you own from outside the game into your hand.

You draw two cards and you lose 2 life.

Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.) Draw a card.

Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.

Search your library for a card, put that card into your hand, then shuffle. Cycling {B} ({B}, Discard this card: Draw a card.)

Choose two target players. Each of them searches their library for a card, then shuffles and puts that card on top.

Target player draws two cards and loses 2 life.

Target player loses 2 life and you gain 2 life. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.