Bloomburrow

Finch Formation | Creature | Bird Scout | Offspring {3} (You may pay an additional {3} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Flying When this creature enters, target creature you control gains flying until end of turn. | Rhonda Libbey

Long River Lurker | Creature | Frog Scout | Ward {1} Other Frogs you control have ward {1}. When Long River Lurker enters, target creature you control can't be blocked this turn. Whenever that creature deals combat damage this turn, you may exile it. If you do, return it to the battlefield under its owner's control. | Valera Lutfullina

Mindwhisker | Creature | Rat Wizard | At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Threshold — As long as seven or more cards are in your graveyard, creatures your opponents control get -1/-0. | Alexander Mokhov

Nightwhorl Hermit | Creature | Rat Rogue | Vigilance Threshold — As long as seven or more cards are in your graveyard, Nightwhorl Hermit gets +1/+0 and can't be blocked. | Valera Lutfullina

Pearl of Wisdom | Sorcery | | This spell costs {1} less to cast if you control an Otter. Draw two cards. | Julie Dillon

Sugar Coat | Enchantment | Aura | Flash Enchant creature or Food Enchanted permanent is a colorless Food artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life" and loses all other card types and abilities. | Gaboleps

Valley Floodcaller | Creature | Otter Wizard | Flash You may cast noncreature spells as though they had flash. Whenever you cast a noncreature spell, Birds, Frogs, Otters, and Rats you control get +1/+1 until end of turn. Untap them. | Victor Adame Minguez

Waterspout Warden | Creature | Frog Soldier | Whenever Waterspout Warden attacks, if another creature entered the battlefield under your control this turn, Waterspout Warden gains flying until end of turn. | J.P. Targete

Plumecreed Mentor | Creature | Bird Scout | Flying Whenever Plumecreed Mentor or another creature you control with flying enters, put a +1/+1 counter on target creature you control without flying. | Henry Peters

Tidecaller Mentor | Creature | Rat Wizard | Menace Threshold — When Tidecaller Mentor enters, if seven or more cards are in your graveyard, return up to one target nonland permanent to its owner's hand. | Irina Nordsol

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

Clement, the Worrywort | Legendary Creature | Frog Druid | Vigilance Whenever Clement, the Worrywort or another creature you control enters, return up to one target creature you control with lesser mana value to its owner's hand. Frogs you control have "{T}: Add {G} or {U}. Spend this mana only to cast a creature spell." | Ekaterina Burmak

Helga, Skittish Seer | Legendary Creature | Frog Druid | Whenever you cast a creature spell with mana value 4 or greater, you draw a card, gain 1 life, and put a +1/+1 counter on Helga, Skittish Seer. {T}: Add X mana of any one color, where X is Helga, Skittish Seer's power. Spend this mana only to cast creature spells with mana value 4 or greater or creature spells with {X} in their mana costs. | Andrea Piparo

Glarb, Calamity's Augur | Legendary Creature | Frog Wizard Noble | Deathtouch You may look at the top card of your library any time. You may play lands and cast spells with mana value 4 or greater from the top of your library. {T}: Surveil 2. | Bram Sels