Ixalan

Axis of Mortality | Enchantment | | At the beginning of your upkeep, you may have two target players exchange life totals. | Bastien L. Deharme

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

Vona, Butcher of Magan | Legendary Creature | Vampire Knight | Vigilance, lifelink {T}, Pay 7 life: Destroy target nonland permanent. Activate only during your turn. | Volkan Baǵa

Huatli, Warrior Poet | Legendary Planeswalker | Huatli | +2: You gain life equal to the greatest power among creatures you control. 0: Create a 3/3 green Dinosaur creature token with trample. −X: Huatli, Warrior Poet deals X damage divided as you choose among any number of target creatures. Creatures dealt damage this way can't block this turn. | Tyler Jacobson

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