Rivals of Ixalan

Crested Herdcaller | Creature | Dinosaur | Trample When Crested Herdcaller enters the battlefield, create a 3/3 green Dinosaur creature token with trample. | Lucas Graciano

Overgrown Armasaur | Creature | Dinosaur | Enrage — Whenever Overgrown Armasaur is dealt damage, create a 1/1 green Saproling creature token. | Joseph Meehan

Tendershoot Dryad | Creature | Dryad | Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) At the beginning of each upkeep, create a 1/1 green Saproling creature token. Saprolings you control get +2/+2 as long as you have the city's blessing. | Yongjae Choi