Keyword: Mill

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

Target player mills five cards.

Target player mills half their library, rounded down.

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

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.)

Target player mills half their library, rounded down.

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

Target player mills five cards.

Whenever Nemesis of Reason attacks, defending player mills ten cards.

, : Create a 1/1 blue and black Zombie Wizard creature token.
: Target player loses X life and mills X cards, where X is the number of Zombies you control.

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
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.)

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

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

: Target player mills a card.

, : Target opponent mills a card, then repeats this process until a creature card or X cards have been put into their graveyard this way, whichever comes first. If one or more creature cards were put into that graveyard this way, sacrifice Helm of Obedience and put one of them onto the battlefield under your control. X can’t be 0.

Trample
At the beginning of your upkeep, sacrifice Deep Spawn unless you mill two cards.
: Deep Spawn gains shroud until end of turn and doesn’t untap during your next untap step. Tap Deep Spawn. (A creature with shroud can’t be the target of spells or abilities.)

Chroma — Reveal the top ten cards of your library. For each blue mana symbol in the mana costs of the revealed cards, target opponent mills a card. Then put the cards you revealed this way on the bottom of your library in any order.

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

Tap an untapped Merfolk you control: Target player mills a card.

Choose a card name, then target player mills a card. If a card with the chosen name was milled this way, you gain life equal to its mana value.
Draw a card.

Counter target spell unless its controller pays . Clash with an opponent. If you win, that spell’s controller mills four cards. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead. If the player discards a card this way, they draw a card. If the player doesn’t discard a card this way, they mill a card.