Keyword: Mill

Players have no maximum hand size.
, : Each player draws X cards.
, : Each opponent mills cards equal to the number of cards in their hand.

This spell costs less to cast for each artifact you control.
When Emry, Lurker of the Loch enters, mill four cards.
: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Intimidate (This creature can’t be blocked except by artifact creatures and/or creatures that share a color with it.)
: Put target artifact or creature card with mana value X from an opponent’s graveyard onto the battlefield under your control tapped. Then that player mills X cards.

Flying
When Gorging Vulture enters, mill four cards. You gain 1 life for each creature card milled this way. (To mill four cards, put the top four cards of your library into your graveyard.)

Whenever another blue creature you control enters, target player mills two cards.

Destroy target artifact.
Dredge 1 (If you would draw a card, you may mill a card instead. If you do, return this card from your graveyard to your hand.)

Sacrifice a creature: Target player mills cards equal to the sacrificed creature’s power.

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

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

Sacrifice Shambling Shell: Put a +1/+1 counter on target creature.
Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)

, Sacrifice Grave-Shell Scarab: Draw a card.
Dredge 1 (If you would draw a card, you may mill a card instead. If you do, return this card from your graveyard to your hand.)

Target player mills ten cards.

When Deadbridge Chant enters, mill ten cards.
At the beginning of your upkeep, choose a card at random in your graveyard. If it’s a creature card, put it onto the battlefield. Otherwise, put it into your hand.

Target creature gets -1/-1 until end of turn.
Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)

Flying
Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature.
Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)

Flying
If Szadek, Lord of Secrets would deal combat damage to a player, instead put that many +1/+1 counters on Szadek and that player mills that many cards.

Choose target creature. Mill four cards, then that creature gets -1/-1 until end of turn for each land card in your graveyard.

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

: Mill a card.
, , Exile Wand of Vertebrae: Shuffle up to five target cards from your graveyard into your library.

Vicious Rumors deals 1 damage to each opponent. Each opponent discards a card, then mills a card. You gain 1 life.

When Glowspore Shaman enters, mill three cards. You may put a land card from your graveyard on top of your library. (To mill a card, put the top card of your library into your graveyard.)

+1: Up to one target creature gets -2/-1 until your next turn.
−2: Mill two cards, then you may return a creature card from your graveyard to your hand.
−7: You get an emblem with “At the beginning of your end step, create X 2/2 black Zombie creature tokens, where X is two plus the number of Zombies you control.”

Mill three cards, then you may return a creature or land card from your graveyard to your hand. (To mill three cards, put the top three cards of your library into your graveyard.)

+2: Untap each enchanted permanent you control.
−1: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and umbra armor.
−7: Mill seven cards. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards.
Estrid, the Masked can be your commander.