When Lumbering Lightshield enters the battlefield, target opponent reveals a nonland card at random from their hand. It perpetually gains "This spell costs more to cast."

All creatures have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Vigilance, reach

Lumra, Bellow of the Woods's power and toughness are each equal to the number of lands you control.

When Lumra enters, mill four cards. Then return all land cards from your graveyard to the battlefield tapped.

Other Mice you control get +1/+1.

When Mabel, Heir to Cragflame enters, create Cragflame, a legendary colorless Equipment artifact token with "Equipped creature gets +1/+1 and has vigilance, trample, and haste" and equip .

All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay ."

When Manic Scribe enters, each opponent mills three cards.

Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, that player mills three cards.

When Marker Beetles dies, target creature gets +1/+1 until end of turn.

, Sacrifice Marker Beetles: Draw a card.

: Target creature blocks Matsu-Tribe Decoy this turn if able.

Whenever Matsu-Tribe Decoy deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Trample

Multicolored creatures you control have trample.

Flying

Whenever Merfolk Windrobber deals combat damage to a player, that player mills a card. (They put the top card of their library into their graveyard.)

Sacrifice Merfolk Windrobber: Draw a card. Activate only if an opponent has eight or more cards in their graveyard.

When Mesmerizing Benthid enters, create two 0/2 blue Illusion creature tokens with "Whenever this creature blocks a creature, that creature doesn't untap during its controller's next untap step."

Mesmerizing Benthid has hexproof as long as you control an Illusion.

, : Target creature with power X or less can't be blocked this turn.

Defender (This creature can't attack.)

Flying

Whenever Mindbender Spores blocks a creature, put four fungus counters on that creature. The creature gains "This creature doesn't untap during your untap step if it has a fungus counter on it" and "At the beginning of your upkeep, remove a fungus counter from this creature."

When Minsc, Beloved Ranger enters, create Boo, a legendary 1/1 red Hamster creature token with trample and haste.

: Until end of turn, target creature you control has base power and toughness X/X and becomes a Giant in addition to its other types. Activate only as a sorcery.

As Mirror of the Forebears enters, choose a creature type.

: Until end of turn, Mirror of the Forebears becomes a copy of target creature you control of the chosen type, except it's an artifact in addition to its other types.

When another creature enters, sacrifice Mogg Bombers and it deals 3 damage to target player or planeswalker.

As an additional cost to cast this spell, sacrifice a creature or pay .

Menace (This creature can't be blocked except by two or more creatures.)

Trample

When Mossbeard Ancient enters, you gain 5 life.

: Add one mana of any color among legendary creatures and planeswalkers you control.

, Pay half your life, rounded up: Destroy target nonblack creature. It can't be regenerated.

Trample

Warp Vortex — When Mutalith Vortex Beast enters, flip a coin for each opponent you have. For each flip you win, draw a card. For each flip you lose, Mutalith Vortex Beast deals 3 damage to that player.

Myojin of Grim Betrayal enters with an indestructible counter on it if you cast it from your hand.

Remove an indestructible counter from Myojin of Grim Betrayal: Put onto the battlefield under your control all creature cards in all graveyards that were put there from anywhere this turn.

When you cast this spell, each player reveals the top card of their library. Naya Soulbeast enters with X +1/+1 counters on it, where X is the total mana value of all cards revealed this way.

Trample

Flash (You may cast this spell any time you could cast an instant.)

Flying

Whenever Nebelgast Herald or another Spirit you control enters, tap target creature an opponent controls.

At the beginning of combat on your turn, if you control another creature with power 4 or greater, put a +1/+1 counter on Nessian Hornbeetle.

New Benalia enters tapped.

When New Benalia enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

: Add .

: Exile target card from an opponent's graveyard. If no cards are in that graveyard, flip Nezumi Graverobber.

All creatures get -1/-1.

This spell costs less to cast if it targets a creature card with mana value 3 or less.

Return target creature card from your graveyard to the battlefield.

As Null Chamber enters, you and an opponent each choose a card name other than a basic land card name.

Spells with the chosen names can't be cast and lands with the chosen names can't be played.

This spell costs less to cast, where X is the total mana value of noncreature enchantments you control.

Trample

, Sacrifice another enchantment: Nyxborn Behemoth gains indestructible until end of turn.

Menace

Whenever Obeka, Splitter of Seconds deals combat damage to a player, you get that many additional upkeep steps after this phase.

: Add , , or .

: Add , , or .

: Add , , or .

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

As Obelisk of Urd enters, choose a creature type.

Creatures you control of the chosen type get +2/+2.

Obsidian Obelisk enters tapped.

: Add .

: Add one mana of any color. Spend this mana only to cast a multicolored spell.

Whenever Ogre Geargrabber attacks, gain control of target Equipment an opponent controls until end of turn. Attach it to Ogre Geargrabber. When you lose control of that Equipment, unattach it.

, Sacrifice Outland Liberator: Destroy target artifact or enchantment.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Target opponent exiles the top X cards of their library face down. You may look at and play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any type to cast it.

Enchant opponent

When Overencumbered enters, enchanted opponent creates a Clue token, a Food token, and a Junk token.

At the beginning of combat on enchanted opponent's turn, that player may pay for each artifact they control. If they don't, creatures can't attack this combat.

Mama's Coming — Whenever Owlbear Cub attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.

Oyaminartok, Polar Werebear has hexproof if it hasn't dealt damage yet.

Whenever Oyaminartok deals combat damage to a player, create a Food token.

, Sacrifice a Food: Draft a card from Oyaminartok's spellbook. When you do, add . Spend this mana only to cast blue creature spells.

Battalion — Whenever Paladin Elizabeth Taggerdy and at least two other creatures attack, draw a card, then you may put a creature card with mana value X or less from your hand onto the battlefield tapped and attacking, where X is Paladin Elizabeth Taggerdy's power.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

, : Look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand.

Whenever Pathbreaker Ibex attacks, creatures you control gain trample and get +X/+X until end of turn, where X is the greatest power among creatures you control.

When Phantasmal Bear becomes the target of a spell or ability, sacrifice it.

Flash

Whenever Phelia, Exuberant Shepherd attacks, exile up to one other target nonland permanent. At the beginning of the next end step, return that card to the battlefield under its owner's control. If it entered under your control, put a +1/+1 counter on Phelia.

When Phyrexian War Beast leaves the battlefield, sacrifice a land and Phyrexian War Beast deals 1 damage to you.