Bloomburrow

Mockingbird | Creature | Bird Bard | Flying You may have Mockingbird enter the battlefield as a copy of any creature on the battlefield with mana value less than or equal to the mana spent to cast Mockingbird, except it is a Bird in addition to its other types and has flying. | Aurore Folny

Iridescent Vinelasher | Creature | Lizard Assassin | Offspring {2} (You may pay an additional {2} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Landfall — Whenever a land you control enters, this creature deals 1 damage to target opponent. | Aaron Miller

Hired Claw | Creature | Lizard Mercenary | Whenever you attack with one or more Lizards, Hired Claw deals 1 damage to target opponent. {1}{R}: Put a +1/+1 counter on Hired Claw. Activate this ability only if an opponent has lost life this turn and only once each turn. | Quintin Gleim

Mistbreath Elder | Creature | Frog Warrior | At the beginning of your upkeep, return another creature you control to its owner's hand. If you do, put a +1/+1 counter on Mistbreath Elder. Otherwise, you may return Mistbreath Elder to its owner's hand. | Jason Kang

Pawpatch Recruit | Creature | Rabbit Warrior | Offspring {2} (You may pay an additional {2} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Trample Whenever a creature you control becomes the target of a spell or ability an opponent controls, put a +1/+1 counter on target creature you control other than that creature. | Johan Grenier

Valley Mightcaller | Creature | Frog Warrior | Trample Whenever another Frog, Rabbit, Raccoon, or Squirrel you control enters, put a +1/+1 counter on Valley Mightcaller. | Matt Stewart