Rivals of Ixalan

Colossal Dreadmaw | Creature | Dinosaur | Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) | Jesper Ejsing

Giltgrove Stalker | Creature | Merfolk Warrior | Giltgrove Stalker can't be blocked by creatures with power 2 or less. | Chris Seaman

Hardy Veteran | Creature | Human Warrior | As long as it's your turn, Hardy Veteran gets +0/+2. | Suzanne Helmigh

Jade Bearer | Creature | Merfolk Shaman | When Jade Bearer enters the battlefield, put a +1/+1 counter on another target Merfolk you control. | Alex Konstad

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

Jungleborn Pioneer | Creature | Merfolk Scout | When Jungleborn Pioneer enters the battlefield, create a 1/1 blue Merfolk creature token with hexproof. (It can't be the target of spells or abilities your opponents control.) | Scott Murphy

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

Orazca Frillback | Creature | Dinosaur | | Simon Dominic

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