When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

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.

Choose one --

• Counter target spell.

• Target player draws two cards.

• Gain control of target nonland permanent with mana value 1 or less.

+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.

When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token.

Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

You may look at the top card of your library any time.

You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.

{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

{1}, {T}, Sacrifice another creature: You gain life equal to the sacrificed creature's toughness. Draw a card.

Whenever a creature dies, you may pay {1}. If you do, Cemetery Puca becomes a copy of that creature, except it has this ability.

As Choked Estuary enters the battlefield, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters the battlefield tapped.

{T}: Add {U} or {B}.

Enchant creature

You control enchanted creature.

Counter target spell unless its controller pays {4}.

Flash

Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.

{T}: Add {U} or {B}.

{4}{B}: Return Durable Coilbug from your graveyard to your hand.

Destroy target creature with mana value 2 or less.

Cycling {2} ({2}, Discard this card: Draw a card.)

Enter the God-Eternals deals 4 damage to target creature and you gain life equal to the damage dealt this way. Target player mills four cards. Amass 4. (Put four +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)

Counter target creature spell.

You may have Evil Twin enter the battlefield as a copy of any creature on the battlefield, except it has "{U}{B}, {T}: Destroy target creature with the same name as this creature."

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Each opponent loses X life. You gain life equal to the life lost this way.

When Frost Lynx enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Flying

{1}{U}: Untap Glimmerbell.

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 the battlefield, 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.

Creatures your opponents control get -2/-0 until end of turn.

Cycling {2} ({2}, Discard this card: Draw a card.)

Mutate {2}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Deathtouch

Whenever this creature mutates, each opponent loses X life and you gain X life, where X is the number of times this creature has mutated.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

+2: Each player draws a card.

-1: Target player draws a card.

-10: Target player mills twenty cards.

Counter target spell that targets a permanent you control.

Draw a card.

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.

Flying

Long-Finned Skywhale can block only creatures with flying.

Flash

When Lurking Deadeye enters the battlefield, destroy target creature that was dealt damage this turn.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it.

Cycling {1} ({1}, Discard this card: Draw a card.)

Each opponent reveals cards from the top of their library until they reveal X land cards, then puts all cards revealed this way into their graveyard. X can't be 0.

You may have Mirrormade enter the battlefield as a copy of any artifact or enchantment on the battlefield.

Counter target instant or sorcery spell.

Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Flash

Enchant creature

Enchanted creature gets -2/-0 and loses all abilities. (Mutating onto the creature won't give it new abilities. It can gain abilities in other ways.)

Counter target spell.

Cycling {2} ({2}, Discard this card: Draw a card.)

When Nightsquad Commando enters the battlefield, if you attacked this turn, create a 1/1 white Human Soldier creature token.

This spell costs {2} less to cast if you control a Human creature and a non-Human creature.

Draw two cards.

Flying

Whenever you draw a card, put a foreshadow counter on Ominous Seas.

Remove eight foreshadow counters from Ominous Seas: Create an 8/8 blue Kraken creature token.

Cycling {2} ({2}, Discard this card: Draw a card.)

Scry 1.

Draw a card.

Flying

You can't lose the game and your opponents can't win the game.

Destroy target creature with power 3 or less.

When Serrated Scorpion dies, it deals 2 damage to each opponent and you gain 2 life.

When Sleeper Dart enters the battlefield, draw a card.

{T}, Sacrifice Sleeper Dart: Target creature doesn't untap during its controller's next untap step.

Flash

Whenever you cast another spell that has flash, you draw a card and each opponent loses 1 life.

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

For each artifact or creature card in target opponent's graveyard, add {C} and you gain 1 life.

Flying

Whenever you draw your second card each turn, Steelgaze Griffin gets +2/+0 until end of turn.

Return target creature or enchantment an opponent controls to its owner's hand.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Temple of Deceit enters the battlefield tapped.

When Temple of Deceit enters the battlefield, scry 1.

{T}: Add {U} or {B}.

Indestructible

As long as your devotion to blue is less than five, Thassa isn't a creature.

At the beginning of your end step, exile up to one other target creature you control, then return that card to the battlefield under your control.

{3}{U}: Tap another target creature.

This spell costs {2} less to cast for each creature card in your graveyard.

Whenever a creature you control dies, put it on the bottom of its owner's library.

{2}{B}, {T}, Pay 2 life: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Whenever Thieving Otter deals damage to an opponent, draw a card.

Target player mills half their library, rounded down.

Choose one --

• Destroy target creature with mana value 3 or less.

• Return target creature to its owner's hand.

({T}: Add {U} or {B}.)

As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

When Wingspan Mentor enters the battlefield, put a flying counter on target non-Human creature you control.

{2}{U}, {T}: Put a +1/+1 counter on each creature you control with flying.

Whenever this creature mutates, target creature an opponent controls gets -2/-2 until end of turn.