Instant and sorcery spells cost {2} less to cast.

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

{B}, {T}, Discard a card: Add {B}{B}{B}.

Boseiju, Who Shelters All enters the battlefield tapped.

{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.

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

Add {B}{B}{B}.

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

Target player discards two cards. That player may copy this spell and may choose a new target for that copy.

Charcoal Diamond enters the battlefield tapped.

{T}: Add {B}.

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

{T}: Add one mana of any color.

Whenever you discard a card, you may exile that card from your graveyard. If you do, you may play that card this turn.

Add {B}{B}{B}.

{1}, {T}: Add {U}{B}.

Untap all nonland permanents you control.

Whenever an opponent loses life, you gain that much life.

Whenever a player casts an instant or sorcery card, exile it. Then that player copies each instant or sorcery card exiled with Eye of the Storm. For each copy, the player may cast the copy without paying its mana cost.

{T}: Add one mana of any color that a land an opponent controls could produce.

Draw two cards, then discard two cards. Untap up to three lands.

Destroy all nonblack creatures. Hellfire deals X plus 3 damage to you, where X is the number of creatures that died this way.

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

Whenever a player casts an instant or sorcery spell, each other player copies that spell. Each of those players may choose new targets for their copy.

Cleave {3}{U}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Draw three cards. [Your maximum hand size is reduced by three for the rest of the game.]

Search your library for three cards and reveal them. Target opponent chooses one. Put that card into your hand and the rest into your graveyard. Then shuffle.

Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.

{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

If Leyline of Anticipation is in your opening hand, you may begin the game with it on the battlefield.

You may cast spells as though they had flash.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Exile all opponents' graveyards. You may cast spells from among those cards this turn, and you may spend mana as though it were mana of any type to cast those spells. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards.

Exile Mnemonic Betrayal.

Exile target instant or sorcery card from a graveyard. Copy that card three times. You may cast the copies without paying their mana costs. Exile Mnemonic Deluge.

Cast this spell only during your end step.

As an additional cost to cast this spell, pay X life.

Draw X cards.

Skip your draw step.

Whenever you play a card, draw a card.

Your maximum hand size is two.

Discard your hand.

This spell costs {1} less to cast for each different mana value among cards in your graveyard.

Whenever you discard a nonland card, you may cast it from your graveyard.

{T}: Add {C}.

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

Magecraft -- Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life.

+1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

-3: Each opponent sacrifices a creature with the greatest power among creatures that player controls.

-8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.

Draw X cards. For each card drawn this way, discard a card unless you sacrifice a permanent.

Whenever you cast an instant or sorcery spell, each opponent loses 1 life.

You may cast Rona, Sheoldred's Faithful from your graveyard by discarding two cards in addition to paying its other costs.

Whenever you gain life, target opponent loses that much life.

Whenever you cast a spell from your graveyard, draw a card.

Flying

Discard a card: Add {B}.

Sky Diamond enters the battlefield tapped.

{T}: Add {U}.

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

Search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.

Enchant instant card in a graveyard

Whenever you cast a sorcery spell, copy the enchanted instant card. You may cast the copy without paying its mana cost. If you do, exile the enchanted card and attach Spellweaver Volute to another instant card in a graveyard.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Exchange control of target noncreature spell and target creature. Then the spell's controller may choose new targets for it.

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

Equip {1}

{T}: Add {C}.

{T}: Add {U} or {B}. Talisman of Dominance deals 1 damage to you.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Draw three cards.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Until end of turn, you may play lands and cast spells from your graveyard.

If a card would be put into your graveyard from anywhere this turn, exile that card instead.