Reality Fracture

Legendary Creature — Human Wizard

Whenever another nontoken creature you control enters, untap Arni.
{T}: Draw a card, then discard a card.

Arni, Humble Scribe

Legendary Creature — Human Berserker

Trample
Whenever another creature you control enters, Arni gets +X/+0 until end of turn, where X is that creature's power.

Arni, Renowned Champion

Card

Hardened Academic

Secrets of Strixhaven Art Series

Old-Growth Educator

Sorcery

Vibrant Idea

Secrets of Strixhaven

Creature — Merfolk Wizard

This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Landscape Painter

Secrets of Strixhaven Promos

Creature — Bird Cleric

Flying, haste
Discard a card: This creature gains lifelink until end of turn.
Whenever one or more cards leave your graveyard, put a +1/+1 counter on target creature you control.

Secrets of Strixhaven Commander

Creature — Hydra

This creature enters with X +1/+1 counters on it.
If one or more +1/+1 counters would be put on another creature you control, that many plus one +1/+1 counters are put on it instead.
{T}, Remove a +1/+1 counter from this creature: Put a +1/+1 counter on another target creature you control.

Benevolent Hydra

Creature — Treefolk Druid

Reach, vigilance
Infusion — When this creature enters, put two +1/+1 counters on it if you gained life this turn.

Lorwyn Eclipsed Commander

Jubilation

Copy

Creature — Elemental Incarnation

When this creature enters, creatures you control get +2/+2 and gain trample until end of turn.
Encore {7}{G}{G} ({7}{G}{G}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Lorwyn Eclipsed Promos

Treefolk

Enchantment

Affinity for Forests (This spell costs {1} less to cast for each Forest you control.)
Landfall — Whenever a land you control enters, create a 3/4 green Treefolk creature token with reach.
{1}{G}, Exile this enchantment: Treefolk and Forests you control gain indestructible until end of turn.

Sapling Nursery

Lorwyn Eclipsed Art Series

Lorwyn Eclipsed

Choose one —
• Target opponent reveals their hand. You choose a nonland permanent card from it. That player discards that card.
• Target creature gets -2/-2 until end of turn.

Auntie's Sentence

The Grand Goatnapper

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. If that creature is a Goat, it also gets +3/+0 until end of turn.

Goatnap

Foundations

Creature — Serpent

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

Tolarian Terror

Bloomburrow Tokens

Flowerfoot Swordmaster

Token Creature — Mouse Soldier

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, Mice you control get +1/+0 until end of turn.
(This token's mana cost is {W}.)

Blacksmith's Talent

Token Artifact — Equipment

Sword

Bloomburrow

Enchantment — Class

(Gain the next level as a sorcery to add its ability.)
When this Class enters, create a colorless Equipment artifact token named Sword with "Equipped creature gets +1/+1" and equip {2}.
{2}{R}: Level 2
At the beginning of combat on your turn, attach target Equipment you control to up to one target creature you control.
{3}{R}: Level 3
During your turn, equipped creatures you control have double strike and haste.

Creature — Mouse Soldier

Vigilance, haste
Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it.

Seedglaive Mentor

Modern Horizons 3

Enchantment Creature — Hydra

Bestow {X}{G}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
Reach, trample
This permanent enters with X +1/+1 counters on it.
Enchanted creature gets +1/+1 for each +1/+1 counter on this Aura and has reach and trample.

Nyxborn Hydra

Murders at Karlov Manor Promos

A Mysterious Creature

Hide in Plain Sight

Look at the top five cards of your library, cloak two of them, and put the rest on the bottom of your library in a random order. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.)

Murders at Karlov Manor

Creature — Homunculus Detective

Other Detectives you control get +1/+1.
Whenever you draw your second card each turn, target Detective can't be blocked this turn.

Private Eye

Wilds of Eldraine Tokens

Druid of Horns

Thragtusk

Garruk Wildspeaker

Pulse of the Tangle

Garruk, Primal Hunter

Wild Endeavor

Feral Incarnation

Garruk, Unleashed

Elder Gargaroth

Fresh Meat

Savage Conception

Radagast, Wizard of Wilds

Vivien, Monsters' Advocate

Trumpeting Gnarr

Beast Within

Sawtusk Demolisher

Soul of Zendikar

The Huntsman's Redemption

Midsummer Revel

Somberwald Beastmaster

Herd Migration

Curious Herd

Bringer of the Green Dawn

Primeval Bounty

Token Creature — Beast

Beast

Wilds of Eldraine

Instant

Tap up to one target creature. Scry 1, then draw a card.

Plunge into Winter

Leaping Ambush

Wilds of Eldraine Art Series

Treasure

Creature — Goblin Rogue

When this creature enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Redcap Thief

Artifact Creature — Construct

Defender
{T}: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.

Unruly Catapult

Target creature gets +1/+3 and gains reach until end of turn. Untap it.

Phyrexia: All Will Be One

Rebel

Artifact — Equipment

For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.)
Equipped creature gets +0/+1.
Equip {1}{W} ({1}{W}: Attach to target creature you control. Equip only as a sorcery.)

Goldwarden's Helm

Unfinity

Flash
When this enchantment enters, exile target nonland permanent until it (this card) leaves the battlefield, then touch it (this card) to your head. When it (this card) stops touching it (your head), sacrifice it (the card, not your head).

Get Your Head in the Game

Ticket Bucket-Bot

Bioluminary

Creature — Merfolk Performer

Whenever Bioluminary deals combat damage to a player, you get {TK}{TK}, then you may put a sticker on a nonland permanent you own.

Put target creature into its owner's library just beneath the top X cards of that library, where X is the number of doors you can see from your seat.

Super-Duper Lost

Artifact — Attraction

Visit — Choose target creature you control. Each other creature you control becomes a copy of that creature until end of turn, except it isn't legendary.

Hall of Mirrors

Dominaria United Art Series

Battle for Baldur's Gate Promos

As this enchantment enters, choose a creature type.
Whenever a creature you control of the chosen type enters or attacks, draw a card.

Kindred Discovery

Battle for Baldur's Gate Art Series

Commander Legends: Battle for Baldur's Gate

You may mill three cards. Then return up to one creature card and up to one land card from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)