Ixalan

Emperor's Vanguard | Creature | Human Scout | Whenever Emperor's Vanguard deals combat damage to a player, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) | Victor Adame Minguez

Grazing Whiptail | Creature | Dinosaur | Reach | Gabor Szikszai

Jade Guardian | Creature | Merfolk Shaman | Hexproof (This creature can't be the target of spells or abilities your opponents control.) When Jade Guardian enters the battlefield, put a +1/+1 counter on target Merfolk you control. | Chris Seaman

Ripjaw Raptor | Creature | Dinosaur | Enrage — Whenever Ripjaw Raptor is dealt damage, draw a card. | Ryan Pancoast

Waker of the Wilds | Creature | Merfolk Shaman | {X}{G}{G}: Put X +1/+1 counters on target land you control. That land becomes a 0/0 Elemental creature with haste. It's still a land. | Shreya Shetty