You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other types, and has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Counter target spell.

Counter target noncreature spell.

Counter target spell unless its controller pays {1} for each card in your graveyard.

Counter target spell. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

When this creature enters, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Flying Whenever this creature enters or attacks, target opponent sacrifices a creature or planeswalker of their choice, discards a card, and loses 3 life. You draw a card and gain 3 life.

Target player mills two cards, draws two cards, and loses 2 life. (To mill a card, a player puts the top card of their library into their graveyard.)

Look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard. You lose 2 life.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Whenever this creature deals combat damage to a player, you may draw a card.

When this creature dies, draw a card for each Zubera that died this turn.

Whenever you attack with two or more creatures, draw a card.

Surveil 2, then draw two cards. Notion Rain deals 2 damage to you. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Target player mills two cards. Draw two cards.

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

({T}: Add {U}.)

{T}: Add {C}. {1}, {T}: Add one mana of any color.

({T}: Add {B}.)

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {U} or {B}.

Flying When this creature enters, mill three cards. (Put the top three cards of your library into your graveyard.) Threshold — This creature gets +2/+1 as long as there are seven or more cards in your graveyard.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Enchant land Whenever enchanted land becomes tapped, its controller mills three cards.

{T}: Target player mills a card. (They put the top card of their library into their graveyard.) {5}, {T}, Sacrifice this artifact: Return target card from your graveyard to your hand.

Flying When this creature enters or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

When this creature enters, mill three cards. (Put the top three cards of your library into your graveyard.) Whenever a creature dies or a creature card is put into a graveyard from a library, each opponent loses 1 life.

Enchant creature Enchanted creature has "{1}{U}, {T}: Target player mills three cards."

Target player mills ten cards.

Landfall — Whenever a land you control enters, target player mills three cards.

{2}, {T}: Target player mills two cards.

Shuffle all cards from your graveyard into your library. Target player mills that many cards.

At 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 those cards into your hand.

When this creature enters, mill two cards.

When this creature enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)

When this creature enters, mill two cards.

{T}: Add one mana of any color in your commander's color identity.

Whenever a creature dies, put a charge counter on this enchantment. At the beginning of your first main phase, add {B} for each charge counter on this enchantment.

{T}: Add {B}. Whenever a creature you control dies, put a corpse counter on this artifact. {4}{B}{B}, {T}, Sacrifice this artifact: Create a 2/2 black Zombie creature token with decayed for each corpse counter on this artifact. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)

{T}: Add {U} or {B}. {U}{B}, {T}, Sacrifice this artifact: Draw a card.

{1}, {T}: Add {U}{B}.

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

{T}: Add {C}. {1}, {T}: Add one mana of any color.

{T}: Add {C}{C}.

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

{T}: Add {C}. {T}: Add {U} or {B}. This artifact deals 1 damage to you.

You may mill two cards. Then return up to two creature cards from your graveyard to your hand. (To mill two cards, put the top two cards of your library into your graveyard.)

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

Target player shuffles their graveyard into their library. Draw a card.

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

When this creature enters, gain control of target permanent. At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

Flying When this creature enters, creatures your opponents control get -2/-2 until end of turn. Unearth {3}{B}{B} ({3}{B}{B}: 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.)

As an additional cost to cast this spell, sacrifice a creature, discard a card, or pay 4 life. When this creature enters, each opponent sacrifices a creature of their choice, discards a card, and loses 4 life.

When this creature enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life.

When this creature enters, each player sacrifices a creature of their choice.

When this creature enters, destroy target nonland permanent an opponent controls.

Menace When this creature enters, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.

When this creature enters, destroy target creature an opponent controls.