Flying

When Abhorrent Overlord enters the battlefield, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

At the beginning of your upkeep, sacrifice a creature.

Whenever a permanent you control is put into a graveyard, you get (an energy counter).

, Pay six : Look at the top six cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

As an additional cost to cast this spell, sacrifice an artifact or creature.

Search your library for an Equipment or Vehicle card, put that card onto the battlefield, then shuffle. If it has mana value less than the sacrificed permanent's mana value, scry 2.

+1: Create a 2/3 blue and black Nightmare creature token with "Whenever this creature attacks or blocks, each opponent exiles the top two cards of their library."

−3: Return target nonland permanent to its owner's hand, then that player exiles a card from their hand.

−7: You may cast up to three spells from among face-up cards your opponents own from exile without paying their mana costs.

Casualty 2 (As you cast this spell, you may sacrifice a creature with power 2 or greater. When you do, copy this spell and you may choose a new target for the copy.)

The owner of target nonenchantment permanent shuffles it into their library, then exiles the top card of their library. If it's a land card, they put it onto the battlefield. Otherwise, they may cast it without paying its mana cost.

When Blight-Breath Catoblepas enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Callaphe's power is equal to your devotion to blue. (Each in the mana costs of permanents you control counts toward your devotion to blue.)

Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost more to cast."

You can't cast permanent spells.

, : Add . When you next cast a spell this turn, exile cards from the top of your library until you exile an instant or sorcery card with lesser mana value. Until end of turn, you may cast that card without paying its mana cost. Put each other card exiled this way on the bottom of your library in a random order.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with mana value less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated.

When Corrosion leaves the battlefield, remove all rust counters from all permanents.

As an additional cost to cast this spell, you may collect evidence 6. (Exile cards with total mana value 6 or greater from your graveyard.)

Flying

When Crimestopper Sprite enters the battlefield, tap target creature. If evidence was collected, put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Target player sacrifices half the permanents they control, rounded down.

Suspend 2— (Rather than cast this card from your hand, you may pay and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

At the beginning of each player's upkeep, if Curse of the Cabal is suspended, that player may sacrifice a permanent. If the player does, put two time counters on Curse of the Cabal.

This spell costs less to cast, where X is your devotion to white. (Each in the mana costs of permanents you control counts toward your devotion to white.)

Flying

Vigilance

As an additional cost to cast white permanent spells, you may pay 2 life. Those spells cost less to cast if you paid life this way. This effect reduces only the amount of white mana you pay.

Whenever you cast a white permanent spell, create a 1/1 white Soldier creature token.

First strike

As an additional cost to cast red permanent spells, you may pay 2 life. Those spells cost less to cast if you paid life this way. This effect reduces only the amount of red mana you pay.

Whenever you cast a red permanent spell, Defiler of Instinct deals 1 damage to any target.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Return target permanent to its owner's hand.

For each tapped nonland permanent target opponent controls, search that player's library for a card with the same name as that permanent. Put those cards onto the battlefield under your control, then that player shuffles.

Suspend 3— (Rather than cast this card from your hand, you may pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Exile all artifacts and creatures with mana value 3 or less. They perpetually gain "This spell costs more to cast" and "This permanent enters the battlefield tapped." For as long as each of them remain exiled, its owner may play it.

If damage would be dealt to Dralnu, Lich Lord, sacrifice that many permanents instead.

: Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. <I>(You may cast that card from your graveyard for its flashback cost. Then exile it.)</I>

Enchant permanent

At the beginning of your precombat main phase, add mana equal to enchanted permanent's mana cost. (Mana cost includes color. If a mana symbol has multiple colors, choose one.)

If you control two or more white permanents that share an artist, you may cast this spell without paying its mana cost.

Exile target enchantment.

Enchant permanent

As long as enchanted permanent is red or green, it has "At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost."

This spell costs less to cast, where X is the total mana value of historic permanents you control. (Artifacts, legendaries, and Sagas are historic.)

Equipped creature gets +10/+0 and has vigilance.

Equip legendary creature

You may sacrifice a nontoken white creature rather than pay this spell's mana cost.

Until end of turn, your life total can't change, and permanents you control gain hexproof and indestructible.

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each in the mana costs of permanents you control counts toward your devotion to black.)

For each player, choose target nonenchantment, nonland permanent that player controls. Those permanents' owners shuffle them into their libraries. Each player who controlled one of those permanents exiles cards from the top of their library until they exile a nonland card, then puts the rest on the bottom of their library in a random order. Each player may cast the nonland card they exiled without paying its mana cost.

Replicate (When you cast this spell, copy it for each time you paid its replicate cost.)

Each Sliver spell you cast has replicate. The replicate cost is equal to its mana cost. (A copy of a permanent spell becomes a token.)

Haste

Chroma — When Heartlash Cinder enters the battlefield, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control.

Flying

Whenever Hellcarver Demon deals combat damage to a player, sacrifice all other permanents you control and discard your hand. Exile the top six cards of your library. You may cast any number of spells from among cards exiled this way without paying their mana costs.

You may tap or untap target permanent, then you may tap or untap another target permanent.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

At the beginning of your upkeep, you may cast a permanent spell from your hand with mana value equal to 1 plus the highest mana value among other permanents you control without paying its mana cost. If you don't, scry 1.

: Add an amount of equal to your devotion to green. (Each in the mana costs of permanents you control counts toward your devotion to green.)

Flying, lifelink

Whenever you cast a spell from anywhere other than your hand, you may cast a permanent spell with equal or lesser mana value from your hand without paying its mana cost. If you don't, you may put a land card from your hand onto the battlefield.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)

When you cast this spell, you may put target nonland permanent on top of its owner's library.

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

Whenever a permanent you control is turned face up, you gain 1 life for each creature you control.

: Manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

When Mogis's Marauder enters the battlefield, up to X target creatures each gain intimidate and haste until end of turn, where X is your devotion to black. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it. Each in the mana costs of permanents you control counts toward your devotion to black.)

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

If tapped for mana, Plains produce , Islands produce , Swamps produce , Mountains produce , and Forests produce instead of any other type.

: Add .

, : Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

When Nylea's Disciple enters the battlefield, you gain life equal to your devotion to green. (Each in the mana costs of permanents you control counts toward your devotion to green.)

Nyx Lotus enters the battlefield tapped.

: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

Rat offering (You may cast this spell any time you could cast an instant by sacrificing a Rat and paying the difference in mana costs between this and the sacrificed Rat. Mana cost includes color.)

Whenever a permanent is put into an opponent's graveyard, that player loses 1 life.

Return target spell or nonland permanent an opponent controls to its owner's hand. You may cast an instant or sorcery spell with equal or lesser mana value from your hand without paying its mana cost.

At the beginning of your end step, you may manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Exile a face-down permanent you control face up: You may play that card this turn. (You still pay its costs. Timing rules still apply.)

Ral, Leyline Prodigy enters the battlefield with an additional loyalty counter on him for each instant and sorcery spell you've cast this turn.

+1: Until your next turn, instant and sorcery spells you cast cost less to cast.

−2: Ral deals 2 damage divided as you choose among one or two targets. Draw a card if you control a blue permanent other than Ral.

−8: Exile the top eight cards of your library. You may cast instant and sorcery spells from among them this turn without paying their mana costs.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

If tapped for mana, Plains produce , Swamps produce , Mountains produce , and Forests produce instead of any other type.

If an opponent cast a red instant or sorcery spell this turn, you may pay rather than pay this spell's mana cost.

Prevent the next 3 damage that a source of your choice would deal to you and/or permanents you control this turn. If damage is prevented this way, Refraction Trap deals that much damage to any target.

If you control two or more green permanents that share an artist, you may cast this spell without paying its mana cost.

Exile target artifact.

When Reverent Hoplite enters the battlefield, create a number of 1/1 white Human Soldier creature tokens equal to your devotion to white. (Each in the mana costs of permanents you control counts toward your devotion to white.)

Flying

When Riftwing Cloudskate enters the battlefield, return target permanent to its owner's hand.

Suspend 3— (Rather than cast this card from your hand, you may pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

Flash

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

You may have Sakashima's Protege enter the battlefield as a copy of any permanent that entered the battlefield this turn.