Ikoria: Lair of Behemoths

Huntmaster Liger | Creature | Cat | Mutate {2}{W} (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, other creatures you control get +X/+X until end of turn, where X is the number of times this creature has mutated. | Leesha Hannigan

Avian Oddity | Creature | Bird | Flying Cycling {2}{U} ({2}{U}, Discard this card: Draw a card.) When you cycle Avian Oddity, put a flying counter on target creature you control. | Simon Dominic

Insatiable Hemophage | Creature | Nightmare | Mutate {2}{B} (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.) Deathtouch Whenever this creature mutates, each opponent loses X life and you gain X life, where X is the number of times this creature has mutated. | Antonio José Manzanedo

Momentum Rumbler | Creature | Dinosaur | Whenever Momentum Rumbler attacks, if it doesn't have first strike, put a first strike counter on it. Whenever Momentum Rumbler attacks, if it has first strike, it gains double strike until end of turn. | Andrey Kuzinskiy

Porcuparrot | Creature | Bird Beast | Mutate {2}{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.) {T}: This creature deals X damage to any target, where X is the number of times this creature has mutated. | Chris Seaman

Exuberant Wolfbear | Creature | Wolf Bear | Whenever Exuberant Wolfbear attacks, you may change the base power and toughness of target Human you control to Exuberant Wolfbear's power and toughness until end of turn. | Jesper Ejsing

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

Boneyard Lurker | Creature | Nightmare Beast | Mutate {2}{B/G}{B/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.) Whenever this creature mutates, return target permanent card from your graveyard to your hand. | Nils Hamm

Proud Wildbonder | Creature | Human Warrior | Trample Creatures you control with trample have "You may have this creature assign its combat damage as though it weren't blocked." | Dmitry Burmak