Ikoria: Lair of Behemoths

Skycat Sovereign | Creature | Elemental Cat | Flying Skycat Sovereign gets +1/+1 for each other creature you control with flying. {2}{W}{U}: Create a 1/1 white Cat Bird creature token with flying. | Slawomir Maniak

Jubilant Skybonder | Creature | Human Wizard | Flying Creatures you control with flying have "Spells your opponents cast that target this creature cost {2} more to cast." | Jesper Ejsing

Yorion, Sky Nomad | Legendary Creature | Bird Serpent | Companion — Your starting deck contains at least twenty cards more than the minimum deck size. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) Flying When Yorion enters the battlefield, exile any number of other nonland permanents you own and control. Return those cards to the battlefield at the beginning of the next end step. | Steven Belledin

Slitherwisp | Creature | Elemental Nightmare | Flash Whenever you cast another spell that has flash, you draw a card and each opponent loses 1 life. | Yigit Koroglu

Cunning Nightbonder | Creature | Human Rogue | Flash Spells with flash you cast cost {1} less to cast and can't be countered. | Ekaterina Burmak

Gyruda, Doom of Depths | Legendary Creature | Demon Kraken | Companion — Your starting deck contains only cards with even mana values. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) When Gyruda enters the battlefield, each player mills four cards. Put a creature card with an even mana value from among the milled cards onto the battlefield under your control. | Tyler Jacobson

Lore Drakkis | Creature | Lizard Beast | Mutate {U/R}{U/R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, return target instant or sorcery card from your graveyard to your hand. | Lucas Graciano

Rielle, the Everwise | Legendary Creature | Human Wizard | Rielle, the Everwise gets +1/+0 for each instant and sorcery card in your graveyard. Whenever you discard one or more cards for the first time each turn, draw that many cards. | Yongjae Choi

Sprite Dragon | Creature | Faerie Dragon | Flying, haste Whenever you cast a noncreature spell, put a +1/+1 counter on Sprite Dragon. | Gabor Szikszai

Lutri, the Spellchaser | Legendary Creature | Elemental Otter | Companion — Each nonland card in your starting deck has a different name. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) Flash When Lutri, the Spellchaser enters the battlefield, if you cast it, copy target instant or sorcery spell you control. You may choose new targets for the copy. | Lie Setiawan

Kinnan, Bonder Prodigy | Legendary Creature | Human Druid | Whenever you tap a nonland permanent for mana, add one mana of any type that permanent produced. {5}{G}{U}: Look at the top five cards of your library. You may put a non-Human creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order. | Jason Rainville

Parcelbeast | Creature | Elemental Beast | Mutate {G}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) {1}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand. | Milivoj Ćeran

Trumpeting Gnarr | Creature | Beast | Mutate {3}{G/U}{G/U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, create a 3/3 green Beast creature token. | Aaron Miller

Keruga, the Macrosage | Legendary Creature | Dinosaur Hippo | Companion — Your starting deck contains only cards with mana value 3 or greater and land cards. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) When Keruga, the Macrosage enters the battlefield, draw a card for each other permanent you control with mana value 3 or greater. | Dan Scott

Jegantha, the Wellspring | Legendary Creature | Elemental Elk | Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.) {T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs. | Chris Rahn

Vadrok, Apex of Thunder | Legendary Creature | Elemental Dinosaur Cat | Mutate {1}{W/U}{R}{R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flying, first strike Whenever this creature mutates, you may cast target noncreature card with mana value 3 or less from your graveyard without paying its mana cost. | Zack Stella

Brokkos, Apex of Forever | Legendary Creature | Nightmare Beast Elemental | Mutate {2}{U/B}{G}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Trample You may cast Brokkos, Apex of Forever from your graveyard using its mutate ability. | Filip Burburan

Illuna, Apex of Wishes | Legendary Creature | Beast Elemental Dinosaur | Mutate {3}{R/G}{U}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flying, trample Whenever this creature mutates, exile cards from the top of your library until you exile a nonland permanent card. Put that card onto the battlefield or into your hand. | Chris Rahn