Wilds of Eldraine

Flick a Coin | Instant | | Flick a Coin deals 1 damage to any target. You create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") Draw a card. | Andreia Ugrai

Frantic Firebolt | Instant | | Frantic Firebolt deals X damage to target creature, where X is 2 plus the number of cards in your graveyard that are instant cards, sorcery cards, and/or have an Adventure. | Olivier Bernard

Gnawing Crescendo | Instant | | Creatures you control get +2/+0 until end of turn. Whenever a nontoken creature you control dies this turn, create a 1/1 black Rat creature token with "This creature can't block." | Alexey Kruglov

Merry Bards | Creature | Human Bard | When Merry Bards enters the battlefield, you may pay {1}. When you do, create a Young Hero Role token attached to target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature has "Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it.") | Iris Compiet

Minecart Daredevil | Creature | Dwarf Knight | | Edgar Sánchez Hidalgo

Redcap Thief | Creature | Goblin Rogue | When Redcap Thief enters the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Vincent Christiaens

Unruly Catapult | Artifact Creature | Construct | Defender {T}: Unruly Catapult deals 1 damage to each opponent. Whenever you cast an instant or sorcery spell, untap Unruly Catapult. | Vincent Christiaens