Kykar, Zephyr Awakener | Legendary Creature | Bird Wizard | Flying
Whenever you cast a noncreature spell, choose one —
• Exile another target creature you control. Return that card to the battlefield under its owner's control at the beginning of the next end step.
• Create a 1/1 white Spirit creature token with flying. | Dmitry Burmak
Empyrean Eagle | Creature | Bird Spirit | Flying
Other creatures you control with flying get +1/+1. | Jason A. Engle
Dreadwing Scavenger | Creature | Nightmare Bird | Flying
Whenever this creature enters or attacks, draw a card, then discard a card.
Threshold — This creature gets +1/+1 and has deathtouch as long as there are seven or more cards in your graveyard. | Xavier Ribeiro
Consuming Aberration | Creature | Horror | Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.
Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard. | Karl Kopinski
Niv-Mizzet, Visionary | Legendary Creature | Dragon Wizard | Flying
You have no maximum hand size.
Whenever a source you control deals noncombat damage to an opponent, you draw that many cards. | Dan Murayama Scott
Balmor, Battlemage Captain | Legendary Creature | Bird Wizard | Flying
Whenever you cast an instant or sorcery spell, creatures you control get +1/+0 and gain trample until end of turn. | Bram Sels
Koma, World-Eater | Legendary Creature | Serpent | This spell can't be countered.
Trample, ward {4}
Whenever Koma deals combat damage to a player, create four 3/3 blue Serpent creature tokens named Koma's Coil. | Mark Zug
Zimone, Paradox Sculptor | Legendary Creature | Human Wizard | At the beginning of combat on your turn, put a +1/+1 counter on each of up to two target creatures you control.
{G}{U}, {T}: Double the number of each kind of counter on up to two target creatures and/or artifacts you control. | Nathaniel Himawan
Tatyova, Benthic Druid | Legendary Creature | Merfolk Druid | Landfall — Whenever a land you control enters, you gain 1 life and draw a card. | Mathias Kollros
Muldrotha, the Gravetide | Legendary Creature | Elemental Avatar | During each of your turns, you may play a land and cast a permanent spell of each permanent type from your graveyard. (If a card has multiple permanent types, choose one as you play it.) | Jason Rainville
Progenitus | Legendary Creature | Hydra Avatar | Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead. | Jaime Jones