Wilds of Eldraine

Armory Mice | Creature | Mouse | Celebration — Armory Mice gets +0/+2 as long as two or more nonland permanents entered the battlefield under your control this turn. | Chris Seaman

Frostbridge Guard | Creature | Elemental Soldier | {2}{W}, {T}: Tap target creature. | Paul Scott Canavan

Unassuming Sage | Creature | Human Peasant Wizard | When Unassuming Sage enters the battlefield, you may pay {2}. If you do, create a Sorcerer Role token attached to it. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.") | Michele Giorgi

Aquatic Alchemist | Creature | Elemental | Whenever you cast your first instant or sorcery spell each turn, Aquatic Alchemist gets +2/+0 until end of turn. | Uriah Voth

Living Lectern | Artifact Creature | Construct | {1}, Sacrifice Living Lectern: Draw a card. Create a Sorcerer Role token attached to up to one other target creature you control. Activate only as a sorcery. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.") | Chris Seaman

Stormkeld Prowler | Creature | Human Rogue | Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on Stormkeld Prowler. | Zara Alfonso

Barrow Naughty | Creature | Faerie | Flying Barrow Naughty has lifelink as long as you control another Faerie. {2}{B}: Barrow Naughty gets +1/+0 until end of turn. | Matt Forsyth

Mintstrosity | Creature | Horror | When Mintstrosity dies, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") | Slawomir Maniak

Wicked Visitor | Creature | Nightmare | Whenever an enchantment you control is put into a graveyard from the battlefield, each opponent loses 1 life. | Nicholas Gregory

Grand Ball Guest | Creature | Human Peasant | Celebration — Grand Ball Guest gets +1/+1 and has trample as long as two or more nonland permanents entered the battlefield under your control this turn. | Leanna Crossan

Ratcatcher Trainee | Creature | Human Peasant | As long as it's your turn, Ratcatcher Trainee has first strike. | Michele Giorgi

Skewer Slinger | Creature | Dwarf Knight | Reach Whenever Skewer Slinger blocks or becomes blocked by a creature, Skewer Slinger deals 1 damage to that creature. | Edgar Sánchez Hidalgo

Rootrider Faun | Creature | Satyr Scout | {T}: Add {G}. {1}, {T}: Add one mana of any color. | Jesper Ejsing

Territorial Witchstalker | Creature | Wolf | Defender At the beginning of combat on your turn, if you control a creature with power 4 or greater, Territorial Witchstalker gets +1/+0 until end of turn and can attack this turn as though it didn't have defender. | Ilse Gort

Troublemaker Ouphe | Creature | Ouphe | Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) When Troublemaker Ouphe enters the battlefield, if it was bargained, exile target artifact or enchantment an opponent controls. | Jesper Ejsing

Scarecrow Guide | Artifact Creature | Scarecrow | Reach {1}: Add one mana of any color. Activate only once each turn. | Carlos Palma Cruchaga