Stream of Thought

Target player mills four cards. You shuffle up to four cards from your graveyard into your library.
Replicate {2}{U}{U} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Dramatic Reversal

Untap all nonland permanents you control.

Jace's Phantasm

Flying
Jace's Phantasm gets +4/+4 as long as an opponent has ten or more cards in their graveyard.

Iceberg Cancrix

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

Snow-Covered Forest

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Explore

You may play an additional land this turn.
Draw a card.

Snow-Covered Island

Jace's Erasure

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

Growth Spiral

Draw a card. You may put a land card from your hand onto the battlefield.

Inaction Injunction

Detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)
Draw a card.

Mind Sculpt

Persistent Petitioners

{1}, {T}: Target player mills a card. (They put the top card of their library into their graveyard.)
Tap four untapped Advisors you control: Target player mills twelve cards.
A deck can have any number of cards named Persistent Petitioners.