The Guild Hall

Creature — Merfolk Wizard

{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell. {1}, {T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell.

Creature — Jellyfish Hydra Beast

When you cast this spell, you gain half X life and draw half X cards. Round down each time. Flying, trample This creature enters with X +1/+1 counters on it.

Enchantment — Aura

Enchant creature Enchanted creature gets +1/+1 and has first strike. Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Legendary Artifact

{1}, {T}: Tap target creature. This ability costs {1} less to activate during your turn. {3}, Sacrifice Hylda's Crown of Winter: Draw a card for each tapped creature your opponents control.

Creature — Human Scout

When this creature enters, untap target creature.

Legendary Creature — Human Scientist

Science Teacher — Each Saga spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast that Saga, copy it for each time you paid its replicate cost. Copies of Saga spells become tokens.) Doctor's companion (You can have two commanders if the other is the Doctor.)

Legendary Creature — Human Warrior

Whenever Ian the Reckless attacks, if it's modified, you may have it deal damage equal to its power to you and any target. (Equipment, Auras you control, and counters are modifications.)

Snow Artifact

{S}, {T}: Tap target artifact or creature. ({S} can be paid with one mana from a snow source.)

Creature — Beast

Trample Landfall — Whenever a land you control enters, this creature gets +1/+0 until end of turn.

Snow Creature — Snake

Flash Flying When this creature enters, draw a card. This creature has deathtouch as long as you control at least three other snow permanents.

Creature — Bird Shaman

Flying Morph {1}{G}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, you may return another target creature to its owner's hand.

Creature — Elemental Ooze

When this creature enters, tap target artifact or creature an opponent controls. Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Snow Artifact Creature — Golem

({S} can be paid with one mana from a snow source.)

Instant

Tiered (Choose one additional cost.) • Blizzard — {0} — Return target creature to its owner's hand. • Blizzara — {2} — Target creature's owner puts it on their choice of the top or bottom of their library. • Blizzaga — {5}{U} — Target creature's owner shuffles it into their library.

Legendary Creature — Mutant Hero

Flying Whenever you cast a blue spell, tap up to one target creature. Whenever you cast a red spell, you may discard a card. If you do, draw a card.

Instant

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) This spell costs {1} less to cast if it's bargained. Counter target spell.

Creature — Serpent

When this creature enters, return target creature an opponent controls to its owner's hand.

Creature — Elemental Soldier

Vigilance Whenever this creature attacks, you may pay {1}{U}. When you do, tap target creature an opponent controls. Whenever you tap an untapped creature an opponent controls, this creature gets +2/+1 until end of turn.

Creature — Phyrexian Vampire

Lifelink {B}, Exile this card from your graveyard: Incubate 2. Activate only as a sorcery. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

Artifact

If you would roll one or more planar dice, instead roll that many planar dice plus one and ignore one. {T}: Add {C}{C}.

Creature — Phyrexian Basilisk

Deathtouch Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Artifact

{1}, {T}: Tap target artifact, creature, or land.

Enchantment — Aura

Enchant creature Enchanted creature has "Whenever this creature attacks alone, it gets +X/+X until end of turn, where X is the number of nonland permanents you control."

Kindred Artifact — Eldrazi

{1}{C}, {T}: Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add {C}." Whenever another Eldrazi you control dies, put a +1/+1 counter on this artifact. As long as this artifact has eight or more +1/+1 counters on it, it's a 0/0 creature in addition to its other types and it has annihilator 2.

Legendary Creature — Human Incarnation

Vanishing 3 Imprint — When Idris enters, exile another artifact you control until Idris leaves the battlefield. Idris has all activated and triggered abilities of the exiled card and gets +X/+X, where X is the exiled card's mana value.

Land — Plains Island

({T}: Add {W} or {U}.) This land enters tapped.

Creature — Elemental Dog

{1}{R}: This creature gets +2/+0 until end of turn.

Sorcery

Igneous Inspiration deals 3 damage to any target. Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Legendary Creature — Human Advisor

When Ignis Scientia enters, look at the top six cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest on the bottom of your library in a random order. I've Come Up with a New Recipe! — {1}{G}{U}, {T}: Exile target card from a graveyard. If a creature card was exiled this way, create a Food token.

Land

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

Enchantment

Flash When this enchantment enters, put an impostor counter on each creature you control. Whenever a creature you control with an impostor counter on it dies, exile it. Return up to one other target creature card from your graveyard to the battlefield.

Sorcery — Lesson

Discard any number of cards, then draw that many cards. Then if there are seven or more cards in your graveyard, create a 3/2 red and white Spirit creature token.

Creature — Human Rogue

Double strike Whenever this creature becomes the target of a spell you control, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Instant

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control. Draw a card.

Creature — Faerie Wizard

You may cast this spell as though it had flash if you control a Faerie. Flying This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)

Creature — Jellyfish Warrior

Flash Flying {2}, Sacrifice this creature: Draw a card.

Creature — Jellyfish Rogue

This creature can't be blocked if you've cast two or more spells this turn. Whenever this creature deals combat damage to a player, draw a card.

Artifact — Equipment

Flash When this Equipment enters, attach it to target creature you control. That creature gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) Equipped creature gets +1/+2. Equip {3}

Creature — Jellyfish Rogue

Whenever you cast your second spell each turn, put a +1/+1 counter on this creature.

Creature — Plant

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

Creature — Human Wizard

{T}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Artifact Creature — Phyrexian Dog

{R/P}: This creature gets +1/+0 until end of turn. ({R/P} can be paid with either {R} or 2 life.)

Creature — Lizard Shaman

Whenever an opponent activates an ability of an artifact, creature, or land that isn't a mana ability, this creature deals 1 damage to that player. {3}{R}{R}: This creature gets +3/+3 and gains menace until end of turn.

Legendary Creature — Human Knight

Whenever an instant or sorcery spell you control that targets only a single creature deals damage to that creature, Imodane deals that much damage to each opponent.

Legendary Creature — Human Rogue Wizard

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) At the beginning of your end step, if you have the initiative, draw a card. Draw another card if you've completed a dungeon. Choose a Background (You can have a Background as a second commander.)

Legendary Creature — Snake Druid

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.) Spells you cast with mana value 6 or greater have cascade.

Sorcery

Paradox — Impending Flux deals X damage to each opponent and each creature they control, where X is 1 plus the number of spells you've cast from anywhere other than your hand this turn. Foretell {1}{R}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Sorcery

Create three 2/2 white Samurai creature tokens with vigilance. Scry 3.

Creature — Human Samurai

Whenever a Samurai or Warrior you control attacks alone, tap target creature you don't control.

Creature — Orc Warlock

Vigilance When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Creature — Human Cleric

Vigilance Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)