Aegis Turtle

Arcane Signet

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

Miscast

Counter target instant or sorcery spell unless its controller pays {3}.

Bay Falcon

Negate

Archmage Emeritus

Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card.

Ruin Crab

Landfall — Whenever a land you control enters, each opponent mills three cards. (To mill a card, a player puts the top card of their library into their graveyard.)

Ingenious Thief

Flying
When Ingenious Thief enters, look at target player's hand.

Ambassador Laquatus

Psychic Corrosion

Whenever you draw a card, each opponent mills two cards.

Heartstone

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Fascination

Choose one —
• Each player draws X cards.
• Each player mills X cards.

Rapid Hybridization

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

Faerie Vandal

Flash
Flying
Whenever you draw your second card each turn, put a +1/+1 counter on Faerie Vandal.

Sands of Delirium

Curse of the Bloody Tome

Enchant player
At the beginning of enchanted player's upkeep, that player mills two cards.

Armored Whirl Turtle

Venture Deeper

Target player mills four cards. (Then exile this card. You may cast the creature later from exile.)

Merfolk Secretkeeper

Merfolk Secretkeeper // Venture Deeper

Didn't Say Please

Counter target spell. Its controller mills three cards.

Sol Ring

Countermand

Counter target spell. Its controller mills four cards.

Ancient Crab

Fractured Sanity

Each opponent mills fourteen cards.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
When you cycle Fractured Sanity, each opponent mills four cards.

Dispel

Drowned Secrets

Whenever you cast a blue spell, target player mills two cards.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Amphin Cutthroat

Sapphire Medallion

Blue spells you cast cost {1} less to cast.

Tormod's Crypt

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Silver Myr

Merfolk Mesmerist

Counterspell

Prosperity

Mind Sculpt

Teferi's Tutelage

When Teferi's Tutelage enters, draw a card, then discard a card.
Whenever you draw a card, target opponent mills two cards. (They put the top two cards of their library into their graveyard.)

Thought Scour

Target player mills two cards.
Draw a card.

Tome Scour

Jace's Erasure

Whenever you draw a card, you may have target player mill a card.

Keening Stone

{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

Hedron Crab

Landfall — Whenever a land you control enters, target player mills three cards.

Millstone

Pongify

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.