When Brain Maggot enters the battlefield, target opponent reveals their hand and you choose a nonland card from it. Exile that card until Brain Maggot leaves the battlefield.

Carrion Grub gets +X/+0, where X is the greatest power among creature cards in your graveyard. When Carrion Grub enters the battlefield, mill four cards. (Put the top four cards of your library into your graveyard.)

Flying When Carrion Locust enters the battlefield, exile target card from an opponent's graveyard. If it was a creature card, that player loses 1 life.

{1}{G}, Sacrifice Caustic Caterpillar: Destroy target artifact or enchantment.

Flying Whenever Caustic Wasps deals combat damage to a player, you may destroy target artifact that player controls.

Emerge {5}{B}{B} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When you cast this spell, target opponent reveals their hand. You choose from it a nonland card with mana value 3 or less and a card with mana value 4 or greater. That player discards those cards.

Flying {B}: Regenerate Fog of Gnats.

Kicker {2}{B} (You may pay an additional {2}{B} as you cast this spell.) Flying When Heartstabber Mosquito enters the battlefield, if it was kicked, destroy target creature.

Whenever Hiveheart Shaman attacks, you may search your library for a basic land card that doesn't share a land type with a land you control, put that card onto the battlefield, then shuffle. {5}{G}: Create a 1/1 green Insect creature token. Put X +1/+1 counters on it, where X is the number of basic land types among lands you control. Activate only as a sorcery.

When Invasive Species enters the battlefield, return another permanent you control to its owner's hand.

Emerge {6}{G} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.) When you cast this spell, create two 1/1 green Insect creature tokens.

Landfall — Whenever a land enters the battlefield under your control, you gain 1 life.

Trample Whenever Living Hive deals combat damage to a player, create that many 1/1 green Insect creature tokens.

{G}, {T}, Sacrifice Magus of the Order and another green creature: Search your library for a green creature card, put it onto the battlefield, then shuffle.

Changeling (This card is every creature type.) When Masked Vandal enters the battlefield, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

Sacrifice a creature: Nantuko Husk gets +2/+2 until end of turn.

{2}{G}, {T}: Target creature gets +X/+X until end of turn, where X is that creature's power.

When Nantuko Tracer enters the battlefield, you may put target card from a graveyard on the bottom of its owner's library.

Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Nantuko Vigilante is turned face up, destroy target artifact or enchantment.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When Necropede dies, you may put a -1/-1 counter on target creature.

Whenever another creature dies, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) {B}: Reaper of the Wilds gains deathtouch until end of turn. {1}{G}: Reaper of the Wilds gains hexproof until end of turn.

At the beginning of your upkeep, if you control five or more lands, put four +1/+1 counters on Scute Mob.

{1}{B}, {T}, Sacrifice another creature: Draw X cards, where X is that creature's power. Choose a Background (You can have a Background as a second commander.)

Flying Swarm of Bloodflies enters the battlefield with two +1/+1 counters on it. Whenever another creature dies, put a +1/+1 counter on Swarm of Bloodflies.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

{G}, {T}: Target creature gets +5/+5 until end of turn.

Flying Whenever Venomous Dragonfly blocks or becomes blocked by a creature, destroy that creature at end of combat.

Vigilance, trample Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

At the beginning of your upkeep, you may mill two cards. Whenever one or more land cards are put into your graveyard from anywhere for the first time each turn, create a 1/1 green Insect creature token.

At the beginning of your upkeep, you may mill a card. Delirium — {2}{G}, Sacrifice Crop Sigil: Return up to one target creature card and up to one target land card from your graveyard to your hand. Activate only if there are four or more card types among cards in your graveyard.

Morbid — At the beginning of each end step, if a creature died this turn, you may draw a card.

(Gain the next level as a sorcery to add its ability.) Landfall — Whenever a land enters the battlefield under your control, you gain 1 life. {2}{G}: Level 2 You may play an additional land on each of your turns. {4}{G}: Level 3 When this Class becomes level 3, target land you control becomes a creature with haste and "This creature's power and toughness are each equal to the number of lands you control." It's still a land.

{G}, Sacrifice a creature: Reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

Enchant land Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Whenever a creature you control dies, you may pay {1}. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest into your graveyard.

{1}, Sacrifice a creature: Search your library for a land card with a basic land type, put it onto the battlefield tapped, then shuffle.

As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

Changeling (This card is every creature type.) Target creature gets +3/-3 and loses all creature types until end of turn.

As an additional cost to cast this spell, you may sacrifice one or more creatures. When you do, copy this spell for each creature sacrificed this way. You draw a card and you lose 1 life.

Destroy target artifact or creature. It can't be regenerated.

Barren Moor enters the battlefield tapped. {T}: Add {B}. Cycling {B} ({B}, Discard this card: Draw a card.)

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

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

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

{T}: Add {C}. {2}, {T}: Each player draws a card, then discards a card.

Golgari Rot Farm enters the battlefield tapped. When Golgari Rot Farm enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{G}.

{T}: Add {C}. {T}, Sacrifice a creature: You gain 1 life.

{T}: Add {C}. {T}: Add {B} or {G}. Llanowar Wastes deals 1 damage to you.

Mortuary Mire enters the battlefield tapped. When Mortuary Mire enters the battlefield, you may put target creature card from your graveyard on top of your library. {T}: Add {B}.

Myriad Landscape enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

({T}: Add {B}.)

Temple of Malady enters the battlefield tapped. When Temple of Malady enters the battlefield, scry 1. {T}: Add {B} or {G}.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Tranquil Thicket enters the battlefield tapped. {T}: Add {G}. Cycling {G} ({G}, Discard this card: Draw a card.)

As an additional cost to cast this spell, sacrifice a creature or discard a card. Destroy target creature or planeswalker.

As an additional cost to cast this spell, sacrifice a creature. Destroy target creature.

Search your library for a card, put that card into your hand, then shuffle.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle. You gain 7 life.

Creatures you control get +3/+3 and gain trample until end of turn.

As an additional cost to cast this spell, sacrifice a creature. You gain life equal to the sacrificed creature's toughness. Destroy target creature an opponent controls.

As an additional cost to cast this spell, exile a creature you control. Return target creature card from your graveyard to the battlefield. Put a +2/+2 counter on that creature if the exiled creature was a Thrull.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Cycling {2} ({2}, Discard this card: Draw a card.)

You draw three cards and you lose 3 life.

As an additional cost to cast this spell, sacrifice two creatures. Draw three cards.

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When Deadly Grub dies, if it had no time counters on it, create a 6/1 green Insect creature token with shroud. (It can't be the target of spells or abilities.)

{T}: Add {B}. Elves of Deep Shadow deals 1 damage to you.

Enchant land Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

You may play up to three additional lands this turn.

Create a 1/1 black and green Worm creature token for each land card in your graveyard. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)