Keyword: Mill

When Stitcher’s Supplier enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)

+1: Mill three cards. If at least one Zombie card is milled this way, each opponent loses 2 life and you gain 2 life.
−2: Target creature gets -X/-X until end of turn, where X is the number of Zombies you control.
−3: You may cast Zombie spells from your graveyard this turn.

As Sewer Nemesis enters, choose a player.
Sewer Nemesis’s power and toughness are each equal to the number of cards in the chosen player’s graveyard.
Whenever the chosen player casts a spell, that player mills a card.

Join forces — Starting with you, each player may pay any amount of mana. Each player mills X cards, where X is the total amount of mana paid this way.

At the beginning of each player’s upkeep, that player mills X cards, where X is the number of cards in their 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.

At the beginning of your upkeep, put a +1/+1 counter on Necroplasm.
At the beginning of your end step, destroy each creature with mana value equal to the number of +1/+1 counters on Necroplasm.
Dredge 2 (If you would draw a card, you may mill two cards instead. If you do, return this card from your graveyard to your hand.)

Whenever an opponent casts a spell, that player mills two cards.

Whenever a creature attacks you or a planeswalker you control, that creature’s controller mills two cards.

Flying
Whenever another creature leaves the battlefield, you may have target player mill two cards.
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

When Homarid Explorer enters, target player mills four cards.

Flying
When Windgrace Acolyte enters, mill three cards and you gain 3 life.

Whenever you cast a historic spell, target player mills two cards. (Artifacts, legendaries, and Sagas are historic.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Mill two cards, then you may return a creature card from your graveyard to your hand.
III — Return all land cards from your graveyard to the battlefield, then shuffle your graveyard into your library.

Draw three cards. Target player mills three cards.

Defender
, : Target player mills X cards, where X is the number of creatures you control with defender.

Target player mills two cards.
Draw a card.

Destroy target nonartifact creature. Its controller mills cards equal to that creature’s power.

Target player mills ten cards.

Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)

Flying
Whenever Shriekgeist deals combat damage to a player, that player mills two cards.

: Add .
, Pay 1 life: Add .
, , Sacrifice a Desert: Target player mills four cards. (They put the top four cards of their library into their graveyard.)

, , Discard a card: Target player mills three cards.

Enchant player
At the beginning of each end step, enchanted player mills X cards, where X is the number of cards put into their graveyard from anywhere this turn.