Rivals of Ixalan

Hunt the Weak | Sorcery | | Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.) | Mathias Kollros

Jadecraft Artisan | Creature | Merfolk Shaman | When Jadecraft Artisan enters the battlefield, target creature gets +2/+2 until end of turn. | Izzy

Knight of the Stampede | Creature | Human Knight | Dinosaur spells you cast cost {2} less to cast. | Steve Argyle