Bloomburrow

Into the Flood Maw | Instant | | Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Return target creature an opponent controls to its owner's hand. If the gift was promised, instead return target nonland permanent an opponent controls to its owner's hand. | Danny Schwartz

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

Portent of Calamity | Sorcery | | Reveal the top X cards of your library. For each card type, you may exile a card of that type from among them. Put the rest into your graveyard. You may cast a spell from among the exiled cards without paying its mana cost if you exiled four or more cards this way. Then put the rest of the exiled cards into your hand. | Sam Guay

Shore Up | Instant | | Target creature you control gets +1/+1 and gains hexproof until end of turn. Untap it. (It can't be the target of spells or abilities your opponents control.) | Raph Lomotan

Splash Portal | Sorcery | | Exile target creature you control, then return it to the battlefield under its owner's control. If that creature is a Bird, Frog, Otter, or Rat, draw a card. | Caio Monteiro

Stormchaser's Talent | Enchantment | Class | (Gain the next level as a sorcery to add its ability.) When Stormchaser's Talent enters, create a 1/1 blue and red Otter creature token with prowess. {3}{U}: Level 2 When this Class becomes level 2, return target instant or sorcery card from your graveyard to your hand. {5}{U}: Level 3 Whenever you cast an instant or sorcery spell, create a 1/1 blue and red Otter creature token with prowess. | Christina Kraus