Foundations

Exemplar of Light | Creature | Angel | Flying Whenever you gain life, put a +1/+1 counter on this creature. Whenever you put one or more +1/+1 counters on this creature, draw a card. This ability triggers only once each turn. | Ekaterina Burmak

Crystal Barricade | Artifact Creature | Wall | Defender (This creature can't attack.) You have hexproof. (You can't be the target of spells or abilities your opponents control.) Prevent all noncombat damage that would be dealt to other creatures you control. | Rockey Chen

Arahbo, the First Fang | Legendary Creature | Cat Avatar | Other Cats you control get +1/+1. Whenever Arahbo or another nontoken Cat you control enters, create a 1/1 white Cat creature token. | Simon Dominic

Herald of Eternal Dawn | Creature | Angel | Flash (You may cast this spell any time you could cast an instant.) Flying You can't lose the game and your opponents can't win the game. | Martina Fačková

Helpful Hunter | Creature | Cat | When this creature enters, draw a card. | Xabi Gaztelua

Hare Apparent | Creature | Rabbit Noble | When this creature enters, create a number of 1/1 white Rabbit creature tokens equal to the number of other creatures you control named Hare Apparent. A deck can have any number of cards named Hare Apparent. | Milivoj Ćeran

Felidar Savior | Creature | Cat Beast | Lifelink (Damage dealt by this creature also causes you to gain that much life.) When this creature enters, put a +1/+1 counter on each of up to two other target creatures you control. | Ilse Gort

Guarded Heir | Creature | Human Noble | Lifelink (Damage dealt by this creature also causes you to gain that much life.) When this creature enters, create two 3/3 white Knight creature tokens. | Craig J Spearing

Armasaur Guide | Creature | Dinosaur | Vigilance (Attacking doesn't cause this creature to tap.) Whenever you attack with three or more creatures, put a +1/+1 counter on target creature you control. | Loïc Canavaggia

Dazzling Angel | Creature | Angel | Flying Whenever another creature you control enters, you gain 1 life. | Daneen Wilkerson

Hinterland Sanctifier | Creature | Rabbit Cleric | Whenever another creature you control enters, you gain 1 life. | Justine Cruz

Inspiring Paladin | Creature | Human Knight | During your turn, this creature has first strike. (It deals combat damage before creatures without first strike.) During your turn, creatures you control with +1/+1 counters on them have first strike. | Valera Lutfullina

Cat Collector | Creature | Human Citizen | When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Whenever you gain life for the first time during each of your turns, create a 1/1 white Cat creature token. | Chris Seaman

Dauntless Veteran | Creature | Human Soldier | Whenever this creature attacks, creatures you control get +1/+1 until end of turn. | Chris Rallis

Prideful Parent | Creature | Cat | Vigilance (Attacking doesn't cause this creature to tap.) When this creature enters, create a 1/1 white Cat creature token. | Leonardo Santanna

Skyknight Squire | Creature | Cat Scout | Whenever another creature you control enters, put a +1/+1 counter on this creature. As long as this creature has three or more +1/+1 counters on it, it has flying and is a Knight in addition to its other types. | Alexander Mokhov

Squad Rallier | Creature | Human Scout | {2}{W}: Look at the top four cards of your library. You may reveal a creature card with power 2 or less from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Edgar Sánchez Hidalgo

Sun-Blessed Healer | Creature | Human Cleric | Kicker {1}{W} (You may pay an additional {1}{W} as you cast this spell.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) When this creature enters, if it was kicked, return target nonland permanent card with mana value 2 or less from your graveyard to the battlefield. | Mark Zug

Vanguard Seraph | Creature | Angel Warrior | Flying Whenever you gain life for the first time each turn, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Zezhou Chen

Ajani's Pridemate | Creature | Cat Soldier | Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate. | Kevin Sidharta

Angel of Finality | Creature | Angel | Flying When Angel of Finality enters, exile target player's graveyard. | Howard Lyon

Cathar Commando | Creature | Human Soldier | Flash {1}, Sacrifice Cathar Commando: Destroy target artifact or enchantment. | Evyn Fong

Giada, Font of Hope | Legendary Creature | Angel | Flying, vigilance Each other Angel you control enters with an additional +1/+1 counter on it for each Angel you already control. {T}: Add {W}. Spend this mana only to cast an Angel spell. | Kai Carpenter

Healer's Hawk | Creature | Bird | Flying, lifelink | Milivoj Ćeran

Mischievous Pup | Creature | Dog | Flash When Mischievous Pup enters, return up to one other target permanent you control to its owner's hand. | Devin Platts

Resolute Reinforcements | Creature | Human Soldier | Flash When Resolute Reinforcements enters, create a 1/1 white Soldier creature token. | Billy Christian

Savannah Lions | Creature | Cat | | Winona Nelson

Serra Angel | Creature | Angel | Flying, vigilance | Greg Staples

Youthful Valkyrie | Creature | Angel | Flying Whenever another Angel you control enters, put a +1/+1 counter on Youthful Valkyrie. | Anna Steinbauer

Kykar, Zephyr Awakener | Legendary Creature | Bird Wizard | Flying Whenever you cast a noncreature spell, choose one — • Exile another target creature you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. • Create a 1/1 white Spirit creature token with flying. | Dmitry Burmak

Empyrean Eagle | Creature | Bird Spirit | Flying Other creatures you control with flying get +1/+1. | Jason A. Engle

Elenda, Saint of Dusk | Legendary Creature | Vampire Knight | Lifelink, hexproof from instants As long as your life total is greater than your starting life total, Elenda gets +1/+1 and has menace. Elenda gets an additional +5/+5 as long as your life total is at least 10 greater than your starting life total. | Chris Rahn

Fiendish Panda | Creature | Bear Demon | Whenever you gain life, put a +1/+1 counter on this creature. When this creature dies, return another target non-Bear creature card with mana value less than or equal to this creature's power from your graveyard to the battlefield. | Brian Valeza

Swiftblade Vindicator | Creature | Human Soldier | Double strike, vigilance, trample | Viktor Titov

Good-Fortune Unicorn | Creature | Unicorn | Whenever another creature you control enters, put a +1/+1 counter on that creature. | Kee Lo

Progenitus | Legendary Creature | Hydra Avatar | Protection from everything If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead. | Jaime Jones