Rivals of Ixalan

Resplendent Griffin | Creature | Griffin | Flying Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) Whenever Resplendent Griffin attacks, if you have the city's blessing, put a +1/+1 counter on it. | Sam Rowan

Legion Lieutenant | Creature | Vampire Knight | Other Vampires you control get +1/+1. | Zezhou Chen

Relentless Raptor | Creature | Dinosaur | Vigilance Relentless Raptor attacks or blocks each combat if able. | Matt Stewart

Atzocan Seer | Creature | Human Druid | {T}: Add one mana of any color. Sacrifice Atzocan Seer: Return target Dinosaur card from your graveyard to your hand. | Joseph Meehan