Wilds of Eldraine

Moonshaker Cavalry | Creature | Spirit Knight | Flying When Moonshaker Cavalry enters the battlefield, creatures you control gain flying and get +X/+X until end of turn, where X is the number of creatures you control. | Aldo Domínguez

Realm-Scorcher Hellkite | Creature | Dragon | Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) Flying, haste When Realm-Scorcher Hellkite enters the battlefield, if it was bargained, add four mana in any combination of colors. {1}{R}: Realm-Scorcher Hellkite deals 1 damage to any target. | Billy Christian

Kellan, the Fae-Blooded | Legendary Creature | Human Faerie | Double strike Other creatures you control get +1/+0 for each Aura and Equipment attached to Kellan, the Fae-Blooded. | Anna Steinbauer

Blossoming Tortoise | Creature | Turtle | Whenever Blossoming Tortoise enters the battlefield or attacks, mill three cards, then return a land card from your graveyard to the battlefield tapped. Activated abilities of lands you control cost {1} less to activate. Land creatures you control get +1/+1. | Simon Dominic

Hylda of the Icy Crown | Legendary Creature | Human Warlock | Whenever you tap an untapped creature an opponent controls, you may pay {1}. When you do, choose one — • Create a 4/4 white and blue Elemental creature token. • Put a +1/+1 counter on each creature you control. • Scry 2, then draw a card. | Ekaterina Burmak

Will, Scion of Peace | Legendary Creature | Human Wizard | Vigilance {T}: Spells you cast this turn that are white and/or blue cost {X} less to cast, where X is the amount of life you gained this turn. Activate only as a sorcery. | Ryan Pancoast

Eriette of the Charmed Apple | Legendary Creature | Human Warlock | Each creature that's enchanted by an Aura you control can't attack you or planeswalkers you control. At the beginning of your end step, each opponent loses X life and you gain X life, where X is the number of Auras you control. | Magali Villeneuve

Talion, the Kindly Lord | Legendary Creature | Faerie Noble | Flying As Talion, the Kindly Lord enters the battlefield, choose a number between 1 and 10. Whenever an opponent casts a spell with mana value, power, or toughness equal to the chosen number, that player loses 2 life and you draw a card. | Justyna Dura

Rowan, Scion of War | Legendary Creature | Human Wizard | Menace {T}: Spells you cast this turn that are black and/or red cost {X} less to cast, where X is the amount of life you lost this turn. Activate only as a sorcery. | Magali Villeneuve

Agatha of the Vile Cauldron | Legendary Creature | Human Warlock | Activated abilities of creatures you control cost X less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana. {4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn. | Jason A. Engle

Beluna Grandsquall | Legendary Creature | Giant Noble | Trample Permanent spells you cast that have an Adventure cost {1} less to cast. | Victor Adame Minguez