Sapphire Medallion

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

Ingenious Thief

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

Thought Vessel

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

Negate

Tormod's Crypt

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

Hedron Crab

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

Armored Whirl Turtle

Countermand

Counter target spell. Its controller mills four cards.

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.

Curse of the Bloody Tome

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

Millstone

Aegis Turtle

Prosperity

Mind Sculpt

Sands of Delirium

Fascination

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

Tome Scour

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.)

Merfolk Mesmerist

Archmage Emeritus

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

Didn't Say Please

Counter target spell. Its controller mills three cards.

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

Amphin Cutthroat

Rapid Hybridization

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

Ancient Crab

Counterspell

Miscast

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

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.

Sol Ring

Thought Scour

Target player mills two cards.
Draw a card.

Silver Myr

Thran Dynamo

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.)

Jace's Erasure

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

Dispel

Pongify

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

Drowned Secrets

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

Psychic Corrosion

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

Keening Stone

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

Arcane Signet

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

Bay Falcon

Faerie Vandal

Flash (You may cast this spell any time you could cast an instant.)
Flying
Whenever you draw your second card each turn, put a +1/+1 counter on Faerie Vandal.