Throne of Eldraine

Harmonious Archon | Creature | Archon | Flying Non-Archon creatures have base power and toughness 3/3. When Harmonious Archon enters the battlefield, create two 1/1 white Human creature tokens. | Anastasia Ovchinnikova

Moonlit Scavengers | Creature | Merfolk Rogue | When Moonlit Scavengers enters the battlefield, if you control an artifact or enchantment, return target creature an opponent controls to its owner's hand. | Miranda Meeks

Feasting Troll King | Creature | Troll Noble | Vigilance, trample When Feasting Troll King enters the battlefield, if you cast it from your hand, create three Food tokens. (They're artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") Sacrifice three Foods: Return Feasting Troll King from your graveyard to the battlefield. Activate only during your turn. | Nicholas Gregory

Tuinvale Treefolk | Creature | Treefolk Druid | | Jason A. Engle

Lochmere Serpent | Creature | Serpent | Flash {U}, Sacrifice an Island: Lochmere Serpent can't be blocked this turn. {B}, Sacrifice a Swamp: You gain 1 life and draw a card. {U}{B}: Exile five target cards from an opponent's graveyard. Return Lochmere Serpent from your graveyard to your hand. Activate only as a sorcery. | Sam Burley

Prophet of the Peak | Artifact Creature | Cat | When Prophet of the Peak enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) | Titus Lunter