Theros Beyond Death

Siona, Captain of the Pyleas | Legendary Creature | Human Soldier | When Siona, Captain of the Pyleas enters the battlefield, look at the top seven cards of your library. You may reveal an Aura card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Whenever an Aura you control becomes attached to a creature you control, create a 1/1 white Human Soldier creature token. | Chris Rallis

Eutropia the Twice-Favored | Legendary Creature | Human Wizard | Constellation — Whenever an enchantment enters the battlefield under your control, put a +1/+1 counter on target creature. That creature gains flying until end of turn. | Sara Winters

Uro, Titan of Nature's Wrath | Legendary Creature | Elder Giant | When Uro enters the battlefield, sacrifice it unless it escaped. Whenever Uro enters the battlefield or attacks, you gain 3 life and draw a card, then you may put a land card from your hand onto the battlefield. Escape—{G}{G}{U}{U}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.) | Vincent Proce

Klothys, God of Destiny | Legendary Enchantment Creature | God | Indestructible As long as your devotion to red and green is less than seven, Klothys isn't a creature. At the beginning of your precombat main phase, exile target card from a graveyard. If it was a land card, add {R} or {G}. Otherwise, you gain 2 life and Klothys deals 2 damage to each opponent. | Magali Villeneuve

Warden of the Chained | Creature | Minotaur Warrior | Trample Warden of the Chained can't attack unless you control another creature with power 4 or greater. | Steve Prescott