Foundations

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

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

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

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

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

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

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

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

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

Leonin Skyhunter | Creature | Cat Knight | Flying | Kev Walker

Dawnwing Marshal | Creature | Cat Soldier | Flying {4}{W}: Creatures you control get +1/+1 until end of turn. | Aldo Domínguez

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

Anthem of Champions | Enchantment | | Creatures you control get +1/+1. | Chris Rallis