Ikoria: Lair of Behemoths

Escape Protocol | Enchantment | | Whenever you cycle a card, you may pay {1}. When you do, exile target artifact or creature you control, then return it to the battlefield under its owner's control. | Deruchenko Alexander

Mystic Subdual | Enchantment | Aura | Flash Enchant creature Enchanted creature gets -2/-0 and loses all abilities. (Mutating onto the creature won't give it new abilities. It can gain abilities in other ways.) | Filip Burburan

Ominous Seas | Enchantment | | Whenever you draw a card, put a foreshadow counter on Ominous Seas. Remove eight foreshadow counters from Ominous Seas: Create an 8/8 blue Kraken creature token. Cycling {2} ({2}, Discard this card: Draw a card.) | Vincent Proce

Pollywog Symbiote | Creature | Frog | Each creature spell you cast costs {1} less to cast if it has mutate. Whenever you cast a creature spell, if it has mutate, draw a card, then discard a card. | Simon Dominic

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

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