Throne of Eldraine

Arcanist's Owl | Artifact Creature | Bird | Flying When Arcanist's Owl enters the battlefield, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Véronique Meignaud

Resolute Rider | Creature | Human Knight | {W/B}{W/B}: Resolute Rider gains lifelink until end of turn. {W/B}{W/B}{W/B}: Resolute Rider gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Carmen Sinek

Fireborn Knight | Creature | Human Knight | Double strike {R/W}{R/W}{R/W}{R/W}: Fireborn Knight gets +1/+1 until end of turn. | Ben Maier

Oakhame Ranger | Creature | Elf Knight Ranger | {T}: Creatures you control get +1/+1 until end of turn. | Mitchell Malloy

Loch Dragon | Creature | Dragon | Flying Whenever Loch Dragon enters the battlefield or attacks, you may discard a card. If you do, draw a card. | Mike Bierek

Thunderous Snapper | Creature | Turtle Hydra | Whenever you cast a spell with mana value 5 or greater, draw a card. | Johann Bodin

Elite Headhunter | Creature | Human Knight | Menace (This creature can't be blocked except by two or more creatures.) {B/R}{B/R}{B/R}, Sacrifice another creature or an artifact: Elite Headhunter deals 2 damage to target creature or planeswalker. | Daarken

Deathless Knight | Creature | Skeleton Knight | Haste When you gain life for the first time each turn, return Deathless Knight from your graveyard to your hand. | Igor Kieryluk

Rampart Smasher | Creature | Giant | Rampart Smasher can't be blocked by Knights or Walls. | Emrah Elmasli