Ixalan

Wakening Sun's Avatar | Creature | Dinosaur Avatar | When Wakening Sun's Avatar enters the battlefield, if you cast it from your hand, destroy all non-Dinosaur creatures. | Tyler Jacobson

Overflowing Insight | Sorcery | | Target player draws seven cards. | Lucas Graciano

Boneyard Parley | Sorcery | | Exile up to five target creature cards from graveyards. An opponent separates those cards into two piles. Put all cards from the pile of your choice onto the battlefield under your control and the rest into their owners' graveyards. | James Ryman

Star of Extinction | Sorcery | | Destroy target land. Star of Extinction deals 20 damage to each creature and each planeswalker. | Chris Rahn

Tishana, Voice of Thunder | Legendary Creature | Merfolk Shaman | Tishana, Voice of Thunder's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. When Tishana enters the battlefield, draw a card for each creature you control. | Anna Steinbauer

Gishath, Sun's Avatar | Legendary Creature | Dinosaur Avatar | Vigilance, trample, haste Whenever Gishath, Sun's Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order. | Zack Stella