Each player can't cast more than one spell each turn.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

Flying Whenever a permanent entering causes a triggered ability to trigger, counter that ability unless its controller pays {2}.

Flying Whenever you cast a Spirit or Arcane spell, destroy all permanents with that spell's mana value.

Exile target permanent with mana value 4 or greater.

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

Flying, ward {3} When this creature enters, exile target player's graveyard. Put a number of +1/+1 counters on this creature equal to the number of creature cards exiled this way.

Flying Whenever a creature becomes the target of a spell or ability, destroy that creature.

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.) Destroy all nontoken creatures.

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

Sacrifice this creature: Destroy target enchantment.

Whenever you cast a Spirit or Arcane spell, target opponent exiles a card from their hand.

Destroy target creature or enchantment.

Exile target opponent's graveyard. For each creature card exiled this way, create a 1/1 colorless Spirit creature token.

Flying Sacrifice this creature: Exile target player's graveyard.

When this creature enters, exile up to one target nonland, nontoken permanent you don't control with mana value 4 or less. When this creature leaves the battlefield, the exiled card's owner creates an X/X blue Illusion creature token, where X is the mana value of the exiled card.

Exile target creature. Its controller gains life equal to its power.

Whenever this creature enters or attacks, exile target card from a graveyard. Put a +1/+1 counter on this creature. This creature has flying as long as a card exiled with it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Exile target nonland permanent.

Exile target monocolored permanent.

Creatures you control get +1/+1. Creatures your opponents control get -1/-1. {2}{W}{B}: Exile target card from an opponent's graveyard. If it was a creature card, you create a 1/1 white and black Spirit creature token with flying.

Creatures you control have myriad. (Whenever a creature with myriad attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Equipped creature gets +0/+3. Astral Projection — {1}{W}: Equipped creature phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.) Equip {1}

Choose two target creatures controlled by the same player. Exile one of those creatures and put two +1/+1 counters on the other.

Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it 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.)

Exile any number of target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

Prevent the next 4 damage that would be dealt this turn to any number of targets, divided as you choose. Flashback {1}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Prevent the next 5 damage that would be dealt this turn to any number of targets, divided as you choose.

As an additional cost to cast this spell, sacrifice a creature. Return any number of target creatures you control to their owner's hand.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards. Flashback {4}{B} (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)

{T}: Draw a card. Activate only if you created a token this turn. {8}, {T}, Sacrifice this artifact: Create a 10/10 colorless Eldrazi creature token.

Whenever another creature you control with power 2 or less enters, you may pay {1}. If you do, draw a card.

Sacrifice any number of permanents you control, then draw that many cards. Plot {1}{B}{B} (You may pay {1}{B}{B} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Alliance — Whenever another creature you control enters, scry 1. If this is the second time this ability has resolved this turn, draw a card instead.

At the beginning of each player's upkeep, that player loses 2 life and draws two cards.

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

This artifact enters tapped. {T}: Add {B}.

This artifact enters tapped. {T}: Add {W}.

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

When this creature enters, you may search your library for a basic Plains card, reveal it, put it into your hand, then shuffle. {6}: Return this card from your graveyard to your hand.

When this enchantment enters, you become the monarch. At the beginning of your upkeep, create a 1/1 white Spirit creature token with flying. If you're the monarch, create a 4/4 white Angel creature token with flying instead.

Bestow {2}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Afterlife 1 (When this permanent is put into a graveyard from the battlefield, create a 1/1 white and black Spirit creature token with flying.) Enchanted creature gets +1/+1 and has afterlife 1.

Flying Whenever you cast a Spirit or Arcane spell, create a 3/3 white Spirit creature token with flying.

At the beginning of each end step, create X 1/1 white Spirit creature tokens with flying, where X is the number of tokens you created this turn.

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

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

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

{T}: Add {C}. When Gods' Eye is put into a graveyard from the battlefield, create a 1/1 colorless Spirit creature token.

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {W}{B}.

This land enters tapped. {T}: Add {W} or {B}.

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {W}.)

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {W} or {B}.

{T}: Add {C}. {1}, {T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {B}.)

{T}: Add {C}{C}. Activate only if you control five or more lands.

When The Grey Havens enters, scry 1. {T}: Add {C}. {T}: Add one mana of any color among legendary creature cards in your graveyard.

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

{T}: Add {C}. {2}{W}{B}, {T}: Creatures you control gain deathtouch and lifelink until end of turn.

Flying At the beginning of your upkeep, return target Spirit card from your graveyard to your hand.

When this creature enters, destroy target enchantment. Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand.

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Other Spirits you control have melee. Prevent all noncombat damage that would be dealt to Spirits you control.

As this enchantment enters, choose a creature type. Creatures you control of the chosen type get +1/+1. {1}, Sacrifice a creature of the chosen type: Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)