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