Bloomburrow

Byway Barterer | Creature | Raccoon Rogue | Menace Whenever you expend 4, you may discard your hand. If you do, draw two cards. (You expend 4 as you spend your fourth total mana to cast spells during a turn.) | Ryan Pancoast

Harnesser of Storms | Creature | Otter Wizard | Whenever you cast a noncreature or Otter spell, you may exile the top card of your library. Until end of turn, you may play that card. This ability triggers only once each turn. | Bram Sels

Hearthborn Battler | Creature | Lizard Warlock | Haste Whenever a player casts their second spell each turn, Hearthborn Battler deals 2 damage to target opponent. | Zoltan Boros

Kindlespark Duo | Creature | Lizard Otter | {T}: Kindlespark Duo deals 1 damage to target opponent. Whenever you cast a noncreature spell, untap Kindlespark Duo. | Daren Bader

Roughshod Duo | Creature | Mouse Raccoon | Trample Whenever you expend 4, target creature you control gets +1/+1 and gains trample until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.) | Michal Ivan

Valley Flamecaller | Creature | Lizard Warlock | If a Lizard, Mouse, Otter, or Raccoon you control would deal damage to a permanent or player, it deals that much damage plus 1 instead. | Justin Gerard

Mabel, Heir to Cragflame | Legendary Creature | Mouse Soldier | 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 {2}. | Aurore Folny

Seedglaive Mentor | Creature | Mouse Soldier | Vigilance, haste Valiant — Whenever Seedglaive Mentor becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it. | Vincent Christiaens

Tempest Angler | Creature | Otter Wizard | Whenever you cast a noncreature spell, put a +1/+1 counter on Tempest Angler. | Raluca Marinescu

Cindering Cutthroat | Creature | Lizard Assassin | Cindering Cutthroat enters with a +1/+1 counter on it if an opponent lost life this turn. {1}{B/R}: Cindering Cutthroat gains menace until end of turn. (It can't be blocked except by two or more creatures.) | Wayne Reynolds

The Infamous Cruelclaw | Legendary Creature | Weasel Mercenary | Menace Whenever The Infamous Cruelclaw deals combat damage to a player, exile cards from the top of your library until you exile a nonland card. You may cast that card by discarding a card rather than paying its mana cost. | Christina Kraus

Muerra, Trash Tactician | Legendary Creature | Raccoon Warrior | At the beginning of your first main phase, add {R} or {G} for each Raccoon you control. Whenever you expend 4, you gain 3 life. (You expend 4 as you spend your fourth total mana to cast spells during a turn.) Whenever you expend 8, exile the top two cards of your library. Until the end of your next turn, you may play those cards. | Volkan Baǵa

Baylen, the Haymaker | Legendary Creature | Rabbit Warrior | Tap two untapped tokens you control: Add one mana of any color. Tap three untapped tokens you control: Draw a card. Tap four untapped tokens you control: Put three +1/+1 counters on Baylen, the Haymaker. It gains trample until end of turn. | Ryan Pancoast