Emptying a library, whether to win by decking someone or to fill your own graveyard for recursion. Both uses are on this list.
86%Takenuma, Abandoned Mire Legendary Land{T}: Add {B}. Channel — {3}{B}, Discard this card: Mill three cards, then return a creature or planeswalker card from your graveya$11.82
89%Syr Konrad, the Grim Legendary Creature — Human KnightWhenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature$1.72
87%Ripples of Undeath EnchantmentAt the beginning of your first main phase, mill three cards. Then you may pay {1} and 3 life. If you do, put a card from among tho$8.00
82%Six Legendary Creature — TreefolkReach Whenever Six attacks, mill three cards. You may put a land card from among them into your hand. During your turn, nonland pe$5.99
82%Tibalt's Trickery InstantCounter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their l$10.69
86%Emry, Lurker of the Loch Legendary Creature — Merfolk WizardAffinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Emry enters, mill four cards. {T}: $0.57
91%Stitcher's Supplier Creature — ZombieWhen this creature enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)$0.34
81%Icetill Explorer Creature — Insect ScoutYou may play an additional land on each of your turns. You may play lands from your graveyard. Landfall — Whenever a land you cont$20.38
80%Thundering Falls Land — Island Mountain({T}: Add {U} or {R}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may p$15.94
91%Aftermath Analyst Creature — Elf DetectiveWhen this creature enters, mill three cards. (Put the top three cards of your library into your graveyard.) {3}{G}, Sacrifice this$0.73
93%Altar of Dementia ArtifactSacrifice a creature: Target player mills cards equal to the sacrificed creature's power.$18.26
94%Brain Freeze InstantTarget player mills three cards. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose
91%Breach the Multiverse SorceryEach player mills ten cards. For each player, choose a creature or planeswalker card in that player's graveyard. Put those cards o$10.05
91%Mindcrank ArtifactWhenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)$12.61
86%Mesmeric Orb ArtifactWhenever a permanent becomes untapped, that permanent's controller mills a card.$17.73
89%Jace, Wielder of Mysteries Legendary Planeswalker — JaceIf you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw $10.60
85%Lumra, Bellow of the Woods Legendary Creature — Elemental BearReach, vigilance Lumra's power and toughness are each equal to the number of lands you control. When Lumra enters, mill four cards$28.12
92%Millikin Artifact Creature — Construct{T}, Mill a card: Add {C}. (Activate only as an instant. To mill a card, put the top card of your library into your graveyard.)$0.33
85%Hedge Shredder Artifact — VehicleWhenever this Vehicle attacks, you may mill two cards. Whenever one or more land cards are put into your graveyard from your libra$2.57
93%Ruin Crab Creature — CrabLandfall — Whenever a land you control enters, each opponent mills three cards. (To mill a card, a player puts the top card of the$1.74
81%Umbral Collar Zealot Creature — Human ClericSacrifice another creature or artifact: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)$0.38
84%Palantír of Orthanc Legendary ArtifactAt the beginning of your end step, put an influence counter on Palantír of Orthanc and scry 2. Then target opponent may have you d$18.81
93%Skull Prophet Creature — Human Druid{T}: Add {B} or {G}. {T}: Mill two cards. (Put the top two cards of your library into your graveyard.)$0.76
93%Hedron Crab Creature — CrabLandfall — Whenever a land you control enters, target player mills three cards. (They put the top three cards of their library int$3.24
88%Altar of the Brood ArtifactWhenever another permanent you control enters, each opponent mills a card.$11.21
84%World Shaper Creature — Merfolk ShamanWhenever this creature attacks, you may mill three cards. When this creature dies, return all land cards from your graveyard to th$8.21
88%The Water Crystal Legendary ArtifactBlue spells you cast cost {1} less to cast. If an opponent would mill one or more cards, they mill that many cards plus four inste$3.99
91%Smuggler's Surprise InstantSpree (Choose one or more additional costs.) + {2} — Mill four cards. You may put up to two creature and/or land cards from among $4.49
87%Consuming Aberration Creature — HorrorConsuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards. Whenever you cast $0.32
94%Maddening Cacophony SorceryKicker {3}{U} Each opponent mills eight cards. If this spell was kicked, instead each opponent mills half their library, rounded u$7.17
Prices and legality come from Scryfall. Every card here was scored by the same search that runs when you type a question.
