Dominaria

Adamant Will | Instant | | Target creature gets +2/+2 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Alex Konstad

Benalish Honor Guard | Creature | Human Knight | Benalish Honor Guard gets +1/+0 for each legendary creature you control. | Ryan Pancoast

Board the Weatherlight | Sorcery | | Look at the top five cards of your library. You may reveal a historic card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. (Artifacts, legendaries, and Sagas are historic.) | Tyler Jacobson

Gideon's Reproach | Instant | | Gideon's Reproach deals 4 damage to target attacking or blocking creature. | Izzy

Knight of Grace | Creature | Human Knight | First strike Hexproof from black (This creature can't be the target of black spells or abilities your opponents control.) Knight of Grace gets +1/+0 as long as any player controls a black permanent. | Sidharth Chaturvedi

Knight of New Benalia | Creature | Human Knight | | Josu Hernaiz

Mesa Unicorn | Creature | Unicorn | Lifelink | Winona Nelson

Seal Away | Enchantment | | Flash When Seal Away enters the battlefield, exile target tapped creature an opponent controls until Seal Away leaves the battlefield. | Joseph Meehan

Serra Disciple | Creature | Bird Cleric | Flying, first strike Whenever you cast a historic spell, Serra Disciple gets +1/+1 until end of turn. (Artifacts, legendaries, and Sagas are historic.) | Victor Adame Minguez

Triumph of Gerrard | Enchantment | Saga | (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Put a +1/+1 counter on target creature you control with the greatest power. III — Target creature you control with the greatest power gains flying, first strike, and lifelink until end of turn. | Daniel Ljunggren

Shanna, Sisay's Legacy | Legendary Creature | Human Warrior | Shanna, Sisay's Legacy can't be the target of abilities your opponents control. Shanna gets +1/+1 for each creature you control. | Magali Villeneuve