The Arcanum Sanctorum

Creature — Horror

Transfigure {1}{B}{B} ({1}{B}{B}, Sacrifice this creature: Search your library for a creature card with the same mana value as this creature, put that card onto the battlefield, then shuffle. Transfigure only as a sorcery.)

Creature — Faerie Rogue

Flying This creature enters with a -1/-1 counter on it. {2}{U}, Remove a counter from this creature: Whenever a creature you control deals combat damage to a player or planeswalker this turn, draw a card.

Sorcery

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. If there is an instant card and a sorcery card in your graveyard, instead put two of them into your hand and the rest on the bottom of your library in any order.

Creature — Jellyfish

Defender, flying Whenever this creature is dealt damage, you and target opponent each draw a card.

Creature — Vedalken Artificer Detective

Whenever you cast an artifact spell, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Activated abilities of artifacts you control cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Legendary Land

{T}: Add {C}. {2}, {T}: Each player draws a card, then discards a card.

Legendary Creature — Human Soldier

Hexproof from monocolored Whenever you cast a multicolored spell, create a 4/4 red and white Golem artifact creature token.

Creature — Eldrazi Drone

Whenever you cast a colorless spell, create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add {C}." Whenever another colorless creature you control enters, this creature deals 1 damage to each opponent.

Creature — Merfolk Rogue

Whenever this creature becomes tapped, exile the top three cards of target opponent's library face down. You may look at cards exiled with this creature. {U}, Sacrifice this creature: Turn all cards exiled with this creature face up. Counter all spells with those names.

Legendary Creature — Ox Mole Mutant

Trample Whenever you tap a land for mana, add {G}.

Legendary Creature — Demon Kraken

Companion — Your starting deck contains only cards with even mana values. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) When Gyruda enters, each player mills four cards. Put a creature card with an even mana value from among the milled cards onto the battlefield under your control.

Artifact — Equipment

Equipped creature gets +2/+1 and has "{T}, Unattach Heartseeker: Destroy target creature." Equip {5} ({5}: Attach to target creature you control. Equip only as a sorcery.)

Sorcery

Suspend 3—{1}{G}{G} Starting with you, each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield. Repeat this process until no one puts a card onto the battlefield.

Artifact — Equipment

Equipped creature gets +1/+0 for each artifact you control. {4}{R}: Create a token that's a copy of this Equipment. Equip {R}

Sorcery

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

Legendary Creature — Kirin Spirit

Flying Whenever you cast a Spirit or Arcane spell, target player reveals their hand and discards all cards with that spell's mana value.

Creature — Human Soldier

{T}: Destroy target creature with power 4 or greater.

Instant

Counter target spell if it shares a color with a creature you control.

Legendary Sorcery

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Target player takes an extra turn after this one. Return up to one target nonland permanent to its owner's hand. Exile Karn's Temporal Sundering.

Legendary Creature — Human Assassin

Vigilance, haste Kelsien gets +1/+1 for each experience counter you have. {T}: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.

Legendary Artifact Creature — Utrom Warrior

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Krang enters, if you have fewer than four cards in hand, draw cards equal to the difference. Krang gets +1/+0 for each other artifact you control.

Enchantment

If this card is in your opening hand, you may begin the game with it on the battlefield. If a card would be put into an opponent's graveyard from anywhere, exile it instead.

Creature — Elemental

Lord of Extinction's power and toughness are each equal to the number of cards in all graveyards.

Artifact — Equipment

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

Creature — Human Cleric

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control.

Enchantment

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Instant

As an additional cost to cast this spell, you may exile any number of white cards from your hand. This spell costs {2} less to cast for each card exiled this way. Exile target artifact, creature, or enchantment with mana value X or less.

Creature — Spirit

Wither (This deals damage to creatures in the form of -1/-1 counters.) At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature.

Legendary Creature — Mutant Ninja Turtle

Whenever you put a counter on a creature you control, draw a card. This ability triggers only once each turn.

Creature — Shapeshifter

Changeling (This card is every creature type.) {X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

Artifact — Equipment

As long as this Equipment is attached to a creature, the first time you would create one or more tokens each turn, you may instead create that many tokens that are copies of equipped creature. Equip {2}

Instant

Each other creature becomes a copy of target nonlegendary creature until end of turn.

Creature — Dragon

{0}: This creature gains flying. (This effect lasts indefinitely.) {0}: This creature loses flying. (This effect lasts indefinitely.) {3}{U}{U}: This creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

Creature — Goblin Bard

Menace Opus — Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature. If five or more mana was spent to cast that spell, add an amount of {R} equal to this creature's power.

Sorcery

Choose up to four. You may choose the same mode more than once. • Destroy target nonland permanent. • Return target nonland permanent card from your graveyard to the battlefield.

Creature — Horror

Other green creatures you control get +1/+1. Other blue creatures you control get +1/+1. Untap all green and/or blue creatures you control during each other player's untap step.

Legendary Creature — Ooze Mutant

Trample Activated abilities of artifact tokens you control cost {1} less to activate. When Mutagen Man enters, create X Mutagen tokens. (They're artifacts with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")

Creature — Snake

Flash When this creature enters, counter target spell.

Enchantment

{1}, Exile two creature cards from a single graveyard: Create a 1/1 green Saproling creature token.

Legendary Enchantment

When Oath of Gideon enters, create two 1/1 white Kor Ally creature tokens. Each planeswalker you control enters with an additional loyalty counter on it.

Legendary Enchantment — Aura

Enchant creature Enchanted creature is legendary, gets +1/+1, and has flying, vigilance, and lifelink.

Instant

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Enchantment

At the beginning of your upkeep, target opponent mills three cards, then you draw a card for each land card put into their graveyard this way.

Instant

Blocking creatures get +0/+3 until end of turn.

Creature — Vampire Cleric

Deathtouch Whenever this creature attacks the player with the most life or tied for most life, create a 1/1 white Vampire creature token with lifelink. Whenever this creature attacks while you have the most life or are tied for most life, you draw a card and you lose 1 life.