The Arcanum Sanctorum

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.

Land — Plains Island

({T}: Add {W} or {U}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Creature — Spirit

Menace When this creature enters, other creatures get -2/-2 until end of turn. {1}{B}, Discard this card: Target creature gets -2/-2 until end of turn.

Artifact

{T}: Add {R}. Sacrifice this artifact: Add {R}.

Legendary Enchantment Creature — God

Indestructible As long as your devotion to white is less than five, Heliod isn't a creature. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.) Other creatures you control have vigilance. {2}{W}{W}: Create a 2/1 white Cleric enchantment creature token.

Creature — Merfolk Warrior

Creatures you control with +1/+1 counters on them can't be blocked.

Sorcery

Create two 1/1 white Soldier creature tokens. Until end of turn, creatures you control get +1/+1 and gain haste. (They can attack and {T} this turn.)

Land

{T}: Add {C}. {T}: Add {U} or {B}. Activate only if this land entered this turn or if you control a basic land.

Legendary Creature — Elf Noble

Whenever High Perfect Morcant or another Elf you control enters, each opponent blights 1. (They each put a -1/-1 counter on a creature they control.) Tap three untapped Elves you control: Proliferate. Activate only as a sorcery. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Legendary Planeswalker — Huatli

+2: You gain life equal to the greatest power among creatures you control. 0: Create a 3/3 green Dinosaur creature token with trample. −X: Huatli deals X damage divided as you choose among any number of target creatures. Creatures dealt damage this way can't block this turn.

Legendary Creature — Human Warlock

Whenever you tap an untapped creature an opponent controls, you may pay {1}. When you do, choose one — • Create a 4/4 white and blue Elemental creature token. • Put a +1/+1 counter on each creature you control. • Scry 2, then draw a card.

Sorcery

Immolating Gyre deals X damage to each creature and planeswalker you don't control, where X is the number of instant and sorcery cards in your graveyard.

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.

Sorcery

Add {R} for each card in your hand.

Legendary Enchantment Creature — God

Indestructible As long as your devotion to red and white is less than seven, Iroas isn't a creature. Creatures you control have menace. Prevent all damage that would be dealt to attacking creatures you control.

Basic Land — Island

({T}: Add {U}.)

Land

This land enters tapped unless you control a Plains or a Swamp. {T}: Add {W} or {B}.

Instant

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

Legendary Creature — Elemental Elk

Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) {T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs.

Legendary Planeswalker — Kaito

At the beginning of your end step, if Kaito entered this turn, he phases out. +1: Draw a card. Then discard a card unless you attacked this turn. −2: Create a 1/1 blue Ninja creature token with "This token can't be blocked." −7: You get an emblem with "Whenever a creature you control deals combat damage to a player, search your library for a blue or black creature card, put it onto the battlefield, then shuffle."

Legendary Enchantment Creature — God

Indestructible As long as your devotion to green and white is less than seven, Karametra isn't a creature. Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle.

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.

Sorcery

Destroy all creatures. You gain life equal to the number of creatures you controlled that were destroyed this way.

Legendary Creature — Human Villain

Trample Whenever Killmonger attacks, he gets +1/+0 until end of turn for each artifact defending player controls. Whenever Killmonger deals combat damage to a player, that player sacrifices an artifact of their choice and you create a Treasure token.

Instant

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Breathe Flame — Klauth's Will deals X damage to each creature without flying. • Smash Relics — Destroy up to X target artifacts and/or enchantments.

Legendary Creature — Demon

Partner with Regna, the Redeemer (When this creature enters, target player may put Regna into their hand from their library, then shuffle.) {B}, Sacrifice X creatures: Target player draws X cards and gains X life. Put X +1/+1 counters on Krav.

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.

Legendary Creature — Human Wizard

Spells can't be countered. Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost.

Enchantment

Whenever an opponent discards a card, that player loses 2 life.

Creature — Elemental

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

Legendary Creature — Rat Noble

Whenever another Rat you control enters, exile up to one target card from an opponent's graveyard. At the beginning of combat on your turn, create a 1/1 black Rat creature token with "This token can't block."

Creature — Vampire Shaman

Flying, protection from white When this creature enters, each opponent loses life equal to the number of Vampires you control. You gain life equal to the life lost this way.

Enchantment

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

Instant

Counter target spell. If you control a Wizard, add an amount of {C} equal to the amount of mana spent to cast that spell at the beginning of your next main phase.

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.

Instant

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Create X 1/1 white Soldier creature tokens with lifelink.

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 — Dragon Spirit

Flying, ward {2} Whenever another nontoken Dragon you control enters, create a token that's a copy of it, except the token isn't legendary.

Legendary Creature — Mutant Ninja Turtle

Ward {2} You may look at the top card of your library any time. You may play lands and cast Mutant, Ninja, or Turtle spells from the top of your library. If you cast a creature spell this way, that creature enters with an additional +1/+1 counter on it.

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 — Griffin

Flying You may cast this card from exile.

Creature — Human Cleric

{T}: Target creature you control gains protection from the color of your choice until end of turn.

Basic Land — Mountain

({T}: Add {R}.)

Sorcery

For each nontoken creature you control, create a token that's a copy of that creature, except it isn't legendary.

Creature — Snake

Flash When this creature enters, counter target spell.

Legendary Planeswalker — Nahiri

Compleated ({R/W/P} can be paid with {R}, {W}, or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.) +1: Until your next turn, up to one target creature attacks a player each combat if able. +1: Discard a card, then draw a card. 0: Exile target creature or Equipment card with mana value less than Nahiri's loyalty from your graveyard. Create a token that's a copy of it. That token gains haste. Exile it at the beginning of the next end step.

Instant

Take an extra turn after this one. If Nexus of Fate would be put into a graveyard from anywhere, reveal Nexus of Fate and shuffle it into its owner's library instead.

Enchantment

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

Creature — Cat

This creature enters with eight revival counters on it if you cast it. When this creature dies, if it had a revival counter on it, return it to the battlefield with one fewer revival counter on it at the beginning of the next end step.

Creature — Human Ninja

Ninjutsu {1}{U} ({1}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever this creature deals combat damage to a player, you may draw a card.

Creature — Human Druid

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U}.