Curse of the Bloody Tome

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

Memory Sluice

Target player mills four cards.
Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Snow-Covered Swamp

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

Psychic Strike

Counter target spell. Its controller mills two cards.

Iceberg Cancrix

Whenever another snow permanent you control enters, you may have target player mill two cards.

Ice Tunnel

({T}: Add {U} or {B}.)
Ice Tunnel enters tapped.

Corrupted Conviction

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Snow-Covered Island

Ink Dissolver

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Ink Dissolver, you may reveal it. If you do, each opponent mills three cards.

Tome Scour

Pilfered Plans

Target player mills two cards. Draw two cards.

Rotcrown Ghoul

When Rotcrown Ghoul dies, target player mills five cards.

Thought Scour

Target player mills two cards.
Draw a card.

Countermand

Counter target spell. Its controller mills four cards.