
Medomai the Ageless | Legendary Creature | Sphinx | Flying
Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.
Medomai the Ageless can't attack during extra turns. | David Palumbo

Dragonlord Dromoka | Legendary Creature | Elder Dragon | This spell can't be countered.
Flying, lifelink
Your opponents can't cast spells during your turn. | Eric Deschamps

Dinrova Horror | Creature | Horror | When Dinrova Horror enters, return target permanent to its owner's hand, then that player discards a card. | Johann Bodin

Dragonlord Silumgar | Legendary Creature | Elder Dragon | Flying, deathtouch
When Dragonlord Silumgar enters, gain control of target creature or planeswalker for as long as you control Dragonlord Silumgar. | Steven Belledin

Progenitor Mimic | Creature | Shapeshifter | You may have Progenitor Mimic enter as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature." | Daarken

Dragonlord Kolaghan | Legendary Creature | Elder Dragon | Flying, haste
Other creatures you control have haste.
Whenever an opponent casts a creature or planeswalker spell with the same name as a card in their graveyard, that player loses 10 life. | Jaime Jones

Sire of Insanity | Creature | Demon | At the beginning of each end step, each player discards their hand. | Joshua Raphael

Swift Warkite | Creature | Dragon | Flying
When Swift Warkite enters, you may put a creature card with mana value 3 or less from your hand or graveyard onto the battlefield. That creature gains haste. Return it to your hand at the beginning of the next end step. | Izzy

Ruric Thar, the Unbowed | Legendary Creature | Ogre Warrior | Vigilance, reach
Ruric Thar, the Unbowed attacks each combat if able.
Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to that player. | Tyler Jacobson