Target creature gets -4/-4 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

This spell costs {1} less to cast for each instant and sorcery card in your graveyard. Prowess When Bedlam Reveler enters the battlefield, discard your hand, then draw three cards.

{R}: Blazing Rootwalla gets +2/+0 until end of turn. Activate only once each turn. Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Blightbelly Rat dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Whenever Cacophony Scamp deals combat damage to a player, you may sacrifice it. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) When Cacophony Scamp dies, it deals damage equal to its power to any target.

Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

Whenever you cast a noncreature spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Skulk (This creature can't be blocked by creatures with greater power.) At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.

When Gitaxian Anatomist enters the battlefield, you may tap it. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Hexproof Whenever a creature card is put into an opponent's graveyard from anywhere, you may have Lazav, Dimir Mastermind become a copy of that card, except its name is Lazav, Dimir Mastermind, it's legendary in addition to its other types, and it has hexproof and this ability.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Whenever a player casts a black spell, you gain 1 life.

Casualty 1 (As you cast this spell, you may sacrifice a creature with power 1 or greater. When you do, copy this spell.) Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Up to two target creatures each get +1/+0 and gain first strike until end of turn. Madness {1}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Draw two cards. If you control no artifacts, discard a card.

As an additional cost to cast this spell, discard a card. Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Counter target spell unless its controller pays {1} for each card in your graveyard. Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Target creature gets +1/+0 and gains first strike until end of turn. Scry 1.

Draw two cards, then discard a card. You gain life equal to the number of cards you've discarded this turn. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

As an additional cost to cast this spell, discard a card or pay {5}. Lightning Axe deals 5 damage to target creature.

Draw a card. Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

You may choose new targets for target spell.

Draw three cards. Then discard two cards unless you discard a basic land card.

Akoum Refuge enters the battlefield tapped. When Akoum Refuge enters the battlefield, you gain 1 life. {T}: Add {B} or {R}.

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

Crumbling Necropolis enters the battlefield tapped. {T}: Add {U}, {B}, or {R}.

({T}: Add {U}.)

When Maestros Theater enters the battlefield, sacrifice it. When you do, search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

({T}: Add {R}.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

All creatures get -2/-2 until end of turn. Madness {2}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

As an additional cost to cast this spell, sacrifice a nonland permanent. Each opponent chooses a permanent they control that shares a card type with the sacrificed permanent and sacrifices it. Draw a card.

Exile target creature or planeswalker. You gain life equal to the number of counters on it.

Suspend 2—{1}{B} (Rather than cast this card from your hand, pay {1}{B} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) Search your library for a card, put that card into your hand, then shuffle.

({U/P} can be paid with either {U} or 2 life.) Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Destroy any number of target planeswalkers. Choose a planeswalker you control. Put two loyalty counters on it for each planeswalker destroyed this way.